CN204230245U - A kind of display floater - Google Patents

Abstract

The utility model relates to a kind of display floater, and comprise a first substrate and a second substrate, a display medium is between described first substrate and second substrate; Between described first substrate and second substrate, the surrounding of display medium is provided with sealing medium, described sealing medium depression has the bit space that allows for holding portion display medium, and described display medium and described sealing medium partly overlap at the projecting direction perpendicular to described first substrate.Improve the intensity of material sealing frame while this display floater can realize narrow frame, and effectively prevent laser to the damage of viewing area.

Description

a display panel

technical field

The utility model relates to the field of display panels, in particular to a packaging structure of an organic light-emitting display panel.

Background technique

In an organic light-emitting display (OLED, Organic Light-Emitting Diode), the organic light-emitting layer and electrodes are prone to failure when exposed to water and oxygen, which greatly affects the service life of the organic light-emitting display. The glass frit is used between the two substrates. After low-temperature baking and high-temperature firing, the glass powder is formed to bond the two substrates. The laser beam is used to move and heat the glass frit to melt to form a layer of sealing body on the glass substrate plane to provide an airtight seal. At present, the encapsulation method using glass frit to protect OLED devices is widely used. The existing glass frit encapsulation method is as shown in FIG. 1 , a glass frit sealing frame is arranged on the periphery of the first substrate 101 (encapsulation cover plate), and the glass frit sealing frame is bonded to the first substrate 101 and the second OLED substrate 103, wherein the glass frit sealing frame The material sealing frame is directly connected to the first substrate 101 . The light emitting layer 105 of the OLED device is sealed in the airtight space formed by the first substrate 101 , the second substrate 103 and the glass frit sealing frame. However, as display devices have increasingly strong requirements for narrow frames, the width of the glass frit frame is required to be reduced, which will lead to a decrease in the sealing strength of the glass frit; and due to the narrow frame requirements, the display distance between the glass frit and the display area is reduced. This may cause damage to the film layer in the display area when the laser irradiates the glass frit, causing fatal damage to the entire display device.

Utility model content

The technical problem to be solved by the utility model is that the strength of the sealing frame of the existing narrow frame display panel is low, and the film layer of the display area may be damaged when the laser is irradiated. Therefore, the utility model provides a display panel, which can While achieving a narrow frame, the strength of the sealing frame is not lost, and the damage to the display area by the sealing laser is effectively prevented.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A display panel, comprising a first substrate and a second substrate, a display medium is located between the first substrate and the second substrate; a seal is provided around the display medium between the first substrate and the second substrate a medium, the sealing medium is recessed with an escape space for accommodating part of the display medium, and the display medium partially overlaps with the sealing medium in a projection direction perpendicular to the first substrate.

As one of the implementations, the sealing medium includes a first sealing medium layer and a second sealing medium layer, and the combination of the first sealing medium layer and the second sealing medium layer forms a stepped sealing structure, and the stepped sealing The structure forms the give way space.

As one of the implementations, the first sealing medium layer and the second sealing medium layer are stacked parallel to the first substrate and the second substrate, and the contact area between the first sealing medium layer and the first substrate is larger than the The contact area between the second sealing medium layer and the second substrate, and the first sealing medium layer partially overlaps with the display medium in a projection direction perpendicular to the first substrate.

As one of the implementations, the first sealing medium layer and the second sealing medium layer are arranged side by side perpendicular to the first substrate and the second substrate, and the thickness of the first sealing medium layer is greater than that of the second sealing medium layer , and the second sealing medium layer partially overlaps with the display medium in a projection direction perpendicular to the first substrate.

As one of the implementation manners, the cross-sections of the first sealing medium layer and the second sealing medium layer are square, rectangular, trapezoidal or other irregular shapes.

As one of the implementation manners, the sealing medium is a glass frit sealing medium layer.

Compared with the prior art, the above-mentioned technical solution of the utility model has the following advantages:

The display panel of the present invention includes a display medium and a sealing medium, the sealing medium is recessed with a space for accommodating part of the display medium, and the display medium and the sealing medium partially overlap in a projection direction perpendicular to the first substrate. Since the sealing medium has a recessed space for accommodating the display medium, the narrow frame becomes possible without losing its sealing strength; The overlap makes it possible not to use a mask plate during the laser sealing process and effectively reduces damage to the display area.

Description of drawings

In order to make the content of the utility model easier to understand clearly, the utility model will be described in further detail below in conjunction with the accompanying drawings, wherein,

FIG. 1 is a schematic structural view of an organic electroluminescent device in the prior art;

Fig. 2 is a structural schematic diagram of the organic electroluminescence device of the present invention;

Figure 3 is a top view of the organic electroluminescent device shown in Figure 2;

Fig. 4 is a schematic structural diagram of the second embodiment of the stepped sealing structure;

5 is a schematic structural view of the third embodiment of the organic electroluminescent device of the present invention;

Fig. 6 is a schematic diagram of the sealing medium shown in Fig. 5 .

The reference signs in the figure represent:

101 - first substrate, 103 - second substrate, 104 - cathode layer, 105 - light emitting layer, 107 - first sealing medium layer, 108 - second sealing medium layer.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on" or "disposed on" another element, it can be directly on the other element or present middle element. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

A display panel of the present utility model includes a first substrate 101 (i.e., a packaging cover plate) and a second substrate 103 (i.e., a transparent substrate), and a display medium is located between the first substrate 101 and the second substrate 103 , the display medium includes a luminescent layer 105 and a cathode layer 104 formed above the luminescent layer 105; a sealing medium is provided around the display medium between the first substrate 101 and the second substrate 103, and the sealing medium is recessed for accommodating part of the display medium Make room for the display medium and the sealing medium to partially overlap in a projection direction perpendicular to the first substrate.

In one of the embodiments, the sealing medium includes a first sealing medium layer 107 and a second sealing medium layer 108, the first sealing medium layer 107 and the second sealing medium layer 108 are combined to form a stepped sealing structure, and the stepped sealing structure forms Make room.

In one of the implementations, the first sealing medium layer 107 and the second sealing medium layer 108 are stacked parallel to the first substrate 101 and the second substrate 103, and the contact area between the first sealing medium layer 107 and the first substrate 101 is larger than The contact area between the second sealing medium layer 108 and the second substrate 103 , and the first sealing medium layer 107 partially overlaps with the display medium in a projection direction perpendicular to the first substrate 101 . As shown in FIG. 2 and FIG. 3 , the width W1 of the first sealing medium layer 107 is greater than the width W2 of the second sealing medium layer 108 , and the difference in width forms a concave relief space. The thickness of the second sealing medium layer 108 is greater than that of the display medium, so that the display medium is partly located below the first sealing medium layer 107 . The optional width range of the first sealing medium layer 107: 100um-1000um, the optional thickness range: 1um-15um, the optional width range of the second sealing medium layer 108: 100um-1000um, the optional thickness range: 2um- 15um.

In one embodiment, the first sealing medium layer 107 and the second sealing medium layer 108 are arranged side by side perpendicular to the first substrate 101 and the second substrate 103, and the thickness of the first sealing medium layer 107 is greater than that of the second sealing medium layer 108 thickness, and the second sealing medium layer 107 partially overlaps with the display medium in a projection direction perpendicular to the first substrate 101 . As shown in FIG. 5 and FIG. 6 , the thickness H4 of the first sealing medium layer 107 is greater than the thickness H3 of the second sealing medium layer 108 , and the thickness difference forms a recessed clearance space. The sum of the thickness of the second sealing medium layer 108 and the thickness of the display medium is smaller than the thickness of the first sealing medium layer 107 , so that the display medium part is located under the second sealing medium layer 108 . The optional width range of the first sealing medium layer 107: 100um-1000um, the optional thickness range: 1um-15um, the optional width range of the second sealing medium layer 108: 100um-1000um, the optional thickness range: 3um- 30um.

In one of the implementations, as shown in Figure 4,

The cross sections of the first sealing medium layer 107 and the second sealing medium layer 108 may be square, rectangular, trapezoidal or other irregular shapes.

The glass frit used in the sealing medium of the present invention contains at least V ₂ O ₅ , P ₂ O ₅ , BaO, SiO ₂ , B ₂ O ₃ , Al ₂ O ₃ , PbO, SnO, TeO _{2 ,} MgO, CaO, ZnO, TiO ₂ , WO ₃ , Bi ₂ O ₃ , Fe ₂ O ₃ , CuO, Sb ₂ O ₃ , Ru ₂ O, Rb ₂ O, lead borate glass, tin phosphate glass, vanadate glass and borosilicate etc. One or more of the glass frit particles have a size ranging from about 0.1 um to 10 um.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (6)

1. A display panel, comprising a first substrate and a second substrate, a display medium is located between the first substrate and the second substrate; the display medium is provided around the first substrate and the second substrate There is a sealing medium, which is characterized in that: the sealing medium is recessed with an escape space for accommodating part of the display medium, and the display medium partially overlaps with the sealing medium in a projection direction perpendicular to the first substrate. 2. The display panel according to claim 1, wherein the sealing medium comprises a first sealing medium layer and a second sealing medium layer, and the combination of the first sealing medium layer and the second sealing medium layer forms a stepped A sealing structure, the step-shaped sealing structure forms the relief space. 3. The display panel according to claim 2, wherein the first sealing medium layer and the second sealing medium layer are stacked parallel to the first substrate and the second substrate, and the first sealing medium layer and the second sealing medium layer A contact area of a substrate is larger than a contact area of the second sealing medium layer and the second substrate, and the first sealing medium layer partially overlaps with the display medium in a projection direction perpendicular to the first substrate. 4. The display panel according to claim 2, characterized in that: the first sealing medium layer and the second sealing medium layer are arranged side by side perpendicular to the first substrate and the second substrate, and the thickness of the first sealing medium layer is larger than the second sealing medium layer, and the second sealing medium layer partially overlaps with the display medium in a projection direction perpendicular to the first substrate. 5. The display panel according to claim 3 or 4, wherein the cross-sections of the first sealing medium layer and the second sealing medium layer are square, rectangular, trapezoidal or other irregular shapes. 6. The display panel according to claim 5, wherein the sealing medium is a glass frit sealing medium layer.