CN101806983B - Manufacturing method of flexible color display medium module - Google Patents

Abstract

The invention relates to a display panel and a manufacturing method of a flexible color display medium module thereof. The manufacturing method of the flexible color display medium module comprises the steps of forming a flexible substrate on a rigid substrate, sequentially forming a plurality of color photoresist layers and display medium layers on the flexible substrate, and finally separating the flexible substrate from the rigid substrate. Because the display medium layer is directly arranged on the color photoresist layer, the alignment accuracy between the display medium layer and the color photoresist layer can be improved, and the parallax phenomenon generated after light passes through the display medium layer and the color photoresist layer can be reduced.

Description

Manufacturing method of flexible color display medium module

technical field

The invention relates to a method for manufacturing a display medium module, in particular to a method for manufacturing a flexible color display medium module and a display panel using the same. the

Background technique

With the advancement of flat display technology, more and more electronic products are equipped with display panels, especially portable electrical products, such as mobile phones, e-books, Digital camera (digital camera) and personal digital assistant (personal digital assistant, PDA), etc. Since portable electronic products tend to be light in weight and thin in thickness, the display panels used in portable electronic products also need to have the advantages of light in weight and thin in thickness. the

Based on the above, since the flexible display panel not only has the advantages of light weight and thin thickness, but also has the advantages of being flexible and unbreakable, the flexible display panel has become an important development trend of the panel industry. Most of the current flexible display panels are electro-phoretic display panels (EPD panels), and the existing conventional color electrophoretic display panel manufacturing method is to first configure the electrophoretic sheet on the active or passive panel. On the substrate of the element array of the source, and then assemble the color filter (color filter) on the electrophoretic sheet. the

However, in the process of assembling the color filter, the inaccurate alignment between the color filter and the electrophoretic sheet often causes parallax after the light passes through the color photoresist layer and the display medium layer, thereby reducing the brightness displayed by the display panel. image quality. the

It can be seen that the above-mentioned existing flexible display panel obviously still has inconveniences and defects in product structure, manufacturing method and use, and needs to be further improved. In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure and method for general products and methods to solve the above-mentioned problems. This is obviously a problem that relevant industry players are eager to solve. Therefore, how to create a new display panel and a method for manufacturing the flexible color display medium module is one of the current important research and development topics, and it has also become a goal that the industry needs to improve. the

Contents of the invention

The purpose of the present invention is to overcome the defects existing in the existing flexible color display medium module, and provide a new manufacturing method of the flexible color display medium module. The alignment accuracy between the resist layer and the display medium layer is very suitable for practical use. the

Another object of the present invention is to overcome the defects existing in the existing flexible color display medium module and provide a new flexible color display medium module. The parallax phenomenon generated after the resist layer and the display medium layer is more suitable for practical use. the

Another object of the present invention is to overcome the defects of the existing manufacturing method of the display panel and provide a new manufacturing method of the display panel. The technical problem to be solved is to increase the flexible color display of the display panel. Alignment accuracy between the dielectric module and the control element array substrate improves the process yield of the display panel, making it more suitable for practical use. the

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. the

To achieve the above object, the present invention provides a method for manufacturing a flexible color display medium module, which firstly provides a rigid substrate, and then forms a flexible substrate on the rigid substrate. Next, a plurality of colored photoresist layers are formed on the flexible substrate, and a display medium layer is formed on the colored photoresist layers, and then the flexible substrate is separated from the rigid substrate. the

In addition, to achieve the above object, the present invention also provides a method for manufacturing a display panel, which uses the above steps to form a flexible color display medium module, and forms a control element array substrate with a display area and a peripheral circuit area. Then, the flexible color display medium module is assembled on the control element array substrate, so that the display medium layer is located on the control element array substrate. Furthermore, a driving circuit is arranged on the control element array substrate, and the driving circuit is located in the peripheral circuit area. the

In an embodiment of the invention, the method for separating the flexible substrate from the rigid substrate includes a laser separation method. the

In an embodiment of the present invention, before forming the color photoresist layers on the flexible substrate, it further includes forming a light-shielding layer on the flexible substrate. The light-shielding layer has a plurality of openings, and the colored photoresist layers are formed in the openings. the

In an embodiment of the present invention, a second rigid substrate may also be provided before forming the control element array substrate, and the control element array substrate is formed on the second rigid substrate. After the driving circuit is formed, it further includes separating the second rigid substrate from the control element array substrate. In this case, they are separated from one another, for example by means of a laser separation method. the

In an embodiment of the present invention, the above color photoresist layers may include red, green and blue filter photoresists. Moreover, in another embodiment, the color photoresist layers may further include white filter photoresist. the

In an embodiment of the present invention, the above-mentioned flexible substrate may be made of polyimide (PI), polyethylene terephthalate (PET), polyaryletherketone (polyether ether ketone) , PEEK) or polyethylene naphthalene (polyethylene naphthalene, PEN). the

Furthermore, in order to achieve the above purpose, the present invention further provides a flexible color display medium module, which is mainly composed of a flexible substrate, a plurality of color photoresist layers and a display medium layer. Among them, the color photoresist layer is arranged on the flexible substrate, and the display medium layer is an electrophoretic sheet or an electrowetting sheet, which is obtained by arranging the electrophoretic layer or the electrowetting layer on two plastic substrates. The display medium layer is configured on the colored photoresist layers and in direct contact with the colored photoresist layers. the

In an embodiment of the present invention, the above-mentioned flexible color display medium module further includes a light-shielding layer disposed on the flexible substrate. The light-shielding layer has a plurality of openings, and the above-mentioned color photoresist layer is filled in these openings. the

In an embodiment of the present invention, the above-mentioned color photoresist layer includes red filter photoresist, green filter photoresist and blue filter photoresist. Moreover, in another embodiment, the color photoresist layers may further include white filter photoresist. the

In an embodiment of the present invention, the material of the above-mentioned flexible substrate may be polyimide, polyethylene terephthalate, polyaryletherketone or polyethylene naphthalate. the

By virtue of the above-mentioned technical solutions, the manufacturing method of the display panel and its flexible color display medium module of the present invention has at least the following advantages and beneficial effects: The present invention firstly forms colored lights sequentially on the flexible substrate formed on the rigid substrate. The barrier layer and the display medium layer are separated before the flexible substrate is separated from the rigid substrate. Therefore, the present invention can greatly improve the process yield and production capacity of the flexible color display medium module and the display panel using it. Moreover, the present invention directly disposes the display medium layer on the color photoresist layer, so it can not only improve the alignment accuracy between the display medium layer and the color photoresist layer, but also reduce the amount of light passing through the display medium layer and the colored light. The parallax phenomenon produced after the resist layer. the

To sum up, the present invention relates to a display panel and a method for manufacturing the flexible color display medium module. The manufacturing method of the flexible color display medium module is to firstly form a flexible substrate on a rigid substrate, then sequentially form a plurality of color photoresist layers and display medium layers on the flexible substrate, and finally combine the flexible substrate with the rigid substrate. Substrate separation. Since the display medium layer is directly arranged on the color photoresist layer, it can not only improve the alignment accuracy between the display medium layer and the color photoresist layer, but also reduce the generation of light after passing through the display medium layer and the color photoresist layer. parallax phenomenon. The present invention has significant progress in technology, and has obvious positive effects, and is a novel, progressive and practical new design. the

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited, and in conjunction with the accompanying drawings, the detailed description is as follows. the

Description of drawings

FIG. 1A to FIG. 1D are schematic cross-sectional process diagrams of a flexible color display medium module according to an embodiment of the present invention. the

FIG. 2 is a schematic cross-sectional view of a color photoresist layer formed on a flexible substrate in another embodiment of the present invention. the

FIG. 3 is a schematic cross-sectional view of a light-shielding layer and a color photoresist layer formed on a flexible substrate in another embodiment of the present invention. the

4A to 4D are cross-sectional views of the manufacturing process of the display panel in an embodiment of the present invention, respectively. the

FIG. 5 is a schematic diagram showing the device arrangement of the control device array substrate in an embodiment of the present invention. the

100: Flexible color display medium module

110, 201: Rigid substrate 120: Flexible substrate

130: Color photoresist layer 140: Shading layer

142: Opening 150: Display medium layer

200: Display panel 210: Control element array substrate

210a: Display area 210b: Peripheral circuit area

212: Substrate 214: Pixel unit

215: Scanning line 216: Data line

217: Thin Film Transistor 218: Pixel Electrode

230: drive circuit 232: IC circuit

234: Flexible printed circuit board R: Red filter photoresist

G: Green filter photoresist B: Blue filter photoresist

W: White filter photoresist

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the following describes the display panel and its flexible color display medium module manufacturing method according to the present invention in conjunction with the accompanying drawings and preferred embodiments. Specific embodiments, structures, methods, steps, features and effects thereof are described in detail below. the

FIG. 1A to FIG. 1D are schematic cross-sectional views of the process (ie, manufacturing process, hereinafter referred to as process) of the flexible color display medium module in an embodiment of the present invention. Please refer to FIG. 1A, firstly, a flexible substrate 120 is formed on a rigid substrate 110, wherein the material of the rigid substrate 110 is glass or stainless steel, and the material of the flexible substrate 120 can be polyimide (polyimide, PI), Polyethylene terephthalate (PET), polyaryletherketone (polyether ether ketone, PEEK) or polyethylene naphthalate (polyethylene naphthalene, PEN). the

Please refer to FIG. 1B , then a plurality of color photoresist layers 130 are formed on the flexible substrate 120 . It is worth mentioning that the color photoresist layer 130 can be made by lithographic etching process, and the color photoresist layer 130 can include red filter photoresist R, green filter photoresist G and blue filter photoresist B . In other embodiments, as shown in FIG. 2, the color photoresist layers 130 formed on the flexible substrate 120 may also include a white filter photoresist W to improve display brightness. the

Moreover, in order to increase the contrast of the display screen and avoid light mixing, in another embodiment of the present invention, a light shielding layer 140 may be formed on the flexible substrate 120 first, as shown in FIG. 3 . Wherein, the material of the light-shielding layer 140 is, for example, resin or other opaque materials, and it has a plurality of openings 142 , and the color photoresist layer 130 is filled in these openings 142 . the

Referring to FIG. 1C , a display medium layer 150 is formed on the color photoresist layer 130 . In this embodiment, the display medium layer 150 may be an electro-phoretic plate or an electro-wetting plate. Specifically, the display medium layer 150 is obtained by, for example, disposing an electrophoretic layer or an electrowetting layer on two plastic substrates, and the electrophoretic layer can be of micro-cup type or micro-capsule type. The electrophoretic layer, but the present invention is not limited thereto. the

Referring to FIG. 1D , the flexible substrate 120 is separated from the rigid substrate 110 to form a flexible color display medium module 100 . Wherein, in this embodiment, the flexible substrate 120 is separated from the rigid substrate 110 by laser release. the

Since the present invention directly disposes the display medium layer 150 on the color photoresist layer 130, the problem of poor alignment between the display medium layer 150 and the color photoresist layer 130 can be avoided, and the light passing through the display medium layer 150 and the colored light can be reduced. The resist layer 130 is a parallax generated by a refractive optical path difference. the

In addition, the present invention separates the flexible substrate 120 from the rigid substrate 110 after completing the process of all the components to be arranged on the flexible substrate 120, so the yield rate of the flexible color display medium module 100 can be greatly improved with yield. The following examples will be given to illustrate the application of the flexible color display medium module 100 of the present invention, but it is not intended to limit the present invention. the

4A to 4D are cross-sectional views of the manufacturing process of the display panel in an embodiment of the present invention, respectively. Referring to FIG. 4A , firstly, a control element array substrate 210 is formed. Wherein, the control element array substrate 210 has a display area 210a and a peripheral circuit area 210b. In detail, in this embodiment, for example, a plurality of pixel units 214 are formed on the substrate 212, and the substrate 212 and these pixel units 214 constitute the control element array substrate 210, and the place where these pixel units 214 are located is the control element array substrate 210 of the display area 210a. the

It is worth mentioning that the control element array substrate 210 of this embodiment can be flexible, and the process is to first form a flexible substrate 212 on the rigid substrate 201, wherein the material of the substrate 212 is the same as the above-mentioned flexible substrate. The materials of the substrate 120 are the same or similar, which will not be repeated here. Next, a pixel unit 214 is formed on the substrate 212 . That is to say, in the present invention, the control element array substrate 210 is firstly formed on the rigid substrate 201 . the

FIG. 5 is a schematic diagram of a control element array substrate in an embodiment of the present invention. Please refer to FIG. 5 , as mentioned above, each pixel unit 214 is formed by a scan line (scan line) 215, a data line (data line) 216, a thin film transistor (thin film transistor, TFT) 217 and a pixel electrode 218. constitute. Wherein, each thin film transistor 217 is electrically connected to the corresponding scan line 215 and data line 216 , and each pixel electrode 218 is electrically connected to the data line 216 through the thin film transistor 217 . That is to say, this embodiment uses a thin film transistor array (TFT array) as the control element. the

It should be noted that although this embodiment is described by taking an active (ie, active, hereinafter referred to as active) control element as an example, it is not intended to limit the present invention. Those skilled in the art should know that the display panel of the present invention can also be controlled by an array of passive (ie passive, hereinafter referred to as passive) control elements. the

4B, the flexible color display medium module 100 is formed, and then the flexible color display medium module 100 and the control element array substrate 210 are assembled on each other, so that the flexible color display medium module 100 The display medium layer 150 is located in the display area 210 a of the control element array substrate 210 . The process of the flexible color display medium module 100 is as described above, and will not be repeated here. the

Please refer to FIG. 4C , after the flexible color display medium module 100 is assembled on the control element array substrate 210 , the driving circuit 230 is disposed in the peripheral circuit region 210 b of the control element array substrate 210 . In detail, the driving circuit 230 includes an IC circuit 232 and a flexible printed circuit (FPC) 234, wherein the IC circuit 232 is used to drive the pixel unit 214 disposed in the display area 210b, and the flexible printed circuit 234 It is used to electrically connect the IC circuit 232 to an external circuit (not shown). Here, the IC circuit 232 can be configured by means of chip-on-glass bonding (Chip on Glass, COG), chip-on-film bonding (Chip on Film, COF) or automatic film bonding (Tape Automatic Bonding, TAB). It is on the control element array substrate 210 and is electrically connected to the pixel unit 214 in the display area 210b. the

In particular, the control element array substrate 210 is separated from the rigid substrate 201 only after the configuration of the driving circuit 230 is completed, so as to manufacture the display panel 200 shown in FIG. 4D . Here, the substrate 212 can also be separated from the rigid substrate 201 by using a laser separation method. the

Since the manufacturing process of the flexible color display medium module of the present invention is to first form a flexible substrate on a rigid substrate, and after sequentially forming a color photoresist layer and a display medium layer on the flexible substrate, the flexible substrate and The rigid substrate is separated, so compared with the conventional method of directly printing the color photoresist layer on the flexible substrate using a roll-to-roll printing process, the flexible color display medium module of the present invention can have better Resolution and process yield and output. the

Moreover, since the present invention directly arranges the display medium layer on the color photoresist layer, it can not only improve the alignment accuracy between the display medium layer and the color photoresist layer, but also prevent light from passing through the display medium layer and the color photoresist layer. When the photoresist layer is used, an image with parallax is generated due to the refraction optical path difference. the

In addition, the display panel disclosed in the present invention may further include a flexible control element array substrate in addition to the above-mentioned flexible color display medium module. Moreover, the present invention firstly forms the control element array substrate on the rigid substrate, and then separates the rigid substrate from the flexible control element array substrate after the configuration of the driving circuit is completed. Therefore, the present invention can not only form the pixel unit on the flexible substrate by using the multi-pass photomask process with the best resolution of 1 micron, but also avoid the problem of the substrate when the driving circuit is arranged on the flexible substrate. The configuration yield of the drive circuit is affected by the deformation under pressure. the

To sum up, the process of the flexible color display medium module disclosed in the present invention is mass-producible, and can effectively improve the process yield of the flexible color display medium module and the display panel using it, and improve the process yield of the flexible color display medium module. The resolution of the flexible color display medium module and the display panel. In addition, the flexible color display medium module of the present invention can further improve the parallax problem of the images displayed on the display panel. the

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the method and technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but if they do not depart from the content of the technical solution of the present invention, Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention. the

Claims (12)

1. a manufacture method for flexible color display medium module, is characterized in that it comprises:

One rigid substrates is provided;

On this rigid substrates, form a flexible substrate;

On this flexible substrate, form a plurality of colorama resistance layers;

In those colorama resistance layers, form a display dielectric layer; And

This flexible substrate is separated with this rigid substrates.

2. the manufacture method of flexible color display medium module according to claim 1, is characterized in that, the method that this flexible substrate is separated with this rigid substrates comprises laser separation process.

3. the manufacture method of flexible color display medium module according to claim 1, it is characterized in that, form those colorama resistance layers on this flexible substrate before, more be included on this flexible substrate and form a light shield layer, and this light shield layer has a plurality of openings, and those colorama resistance layers are to be formed in those openings.

4. the manufacture method of flexible color display medium module according to claim 1, is characterized in that, on this flexible substrate, formed those colorama resistance layers comprise red optical filtering photoresistance, green optical filtering photoresistance and blue optical filtering photoresistance.

5. the manufacture method of flexible color display medium module according to claim 4, is characterized in that, on this flexible substrate, formed those colorama resistance layers more comprise white optical filtering photoresistance.

6. a manufacture method for display panel, is characterized in that it comprises the following steps:

Form a flexible color display medium module, it comprises the following steps:

One first rigid substrates is provided;

On this rigid substrates, form a flexible substrate;

On this flexible substrate, form a plurality of colorama resistance layers;

In those colorama resistance layers, form a display dielectric layer; And

This flexible substrate is separated with this rigid substrates;

Form a control element array base palte, this control element array base palte has a viewing area and a periphery circuit region;

This flexible color display medium module group is stood on to this control element array base palte top, so that this display dielectric layer is positioned on this control element array base palte; And

On this control element array base palte, configure one drive circuit, this driving circuit is to be positioned at this periphery circuit region.

7. the manufacture method of display panel according to claim 6, is characterized in that, wherein this flexible substrate method separated with this first rigid substrates is comprised to laser separation process.

8. the manufacture method of display panel according to claim 6, it is characterized in that, before wherein forming those colorama resistance layers on this flexible substrate, more be included on this flexible substrate and form a light shield layer, and this light shield layer has a plurality of openings, and those colorama resistance layers are to be formed in those openings.

9. the manufacture method of display panel according to claim 6, it is characterized in that, wherein before forming this control element array base palte, more comprise one second rigid substrates is provided, and this control element array base palte is to be formed on this second rigid substrates, and after forming this driving circuit, more comprise this second rigid substrates separated with this control element array base palte.

10. the manufacture method of display panel according to claim 9, is characterized in that, wherein this second rigid substrates method separated with this control element array base palte is comprised to laser separation process.

The manufacture method of 11. display panels according to claim 6, is characterized in that, wherein on this flexible substrate, formed those colorama resistance layers comprise red optical filtering photoresistance, green optical filtering photoresistance and blue optical filtering photoresistance.

The manufacture method of 12. display panels according to claim 11, is characterized in that, wherein on this flexible substrate, formed those colorama resistance layers more comprise white optical filtering photoresistance.