CN103715229A

CN103715229A - Array substrate and display device

Info

Publication number: CN103715229A
Application number: CN201310741835.8A
Authority: CN
Inventors: 永山和由
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2013-12-27
Filing date: 2013-12-27
Publication date: 2014-04-09

Abstract

The invention relates to the technical field of displaying and discloses an array substrate. The array substrate comprises grid lines, data lines and a plurality of pixel units defined by the grid lines and the data lines in an intersecting mode. Each pixel unit comprises a pixel electrode, and an anti-fracture structure is formed in each pixel electrode. Because the anti-fracture structures are formed in the pixel electrodes and the stress on the pixel electrodes is dispersed by the anti-fracture structures when a flexible display device is bent, the probability of fracture of the pixel electrodes caused when the flexible display device is bent is lowered, and it is guaranteed that the flexible display device can perform displaying normally.

Description

Array base palte and display unit

Technical field

The present invention relates to Display Technique field, particularly a kind of array base palte and display unit.

Background technology

Flexible display apparatus is compared with common rigid display, and flexible display has plurality of advantages: shock-resistant, shock resistance is stronger; Lightweight, volume is little; Carry convenient; Employing is similar to the coil type technique of newspaper printing technique, and cost is cheaper etc.Main flexible display apparatus mainly comprises at present: flexible OLED display and flexible liquid crystal display etc.

For flexible OLED display and flexible liquid crystal display, when bending, easily rupture in pixel electrode (anode in OLED display) corresponding region.This fracture may cause the partial pixel electrode (after fracture not with the part that is connected of drain electrode) cannot normal power-up, thereby causes showing bad.

The OLED display of 2T1C of take is example, as shown in Figure 1, shows a pixel cell on this display array substrate.If this display is when bending, pixel electrode 110 may, along the fracture of dotted line place, cause showing bad.

Summary of the invention

(1) technical problem that will solve

The technical problem to be solved in the present invention is: how to reduce to cause the probability of pixel electrode fracture when flexible display apparatus is crooked, flexible display apparatus can normally be shown.

(2) technical scheme

For solving the problems of the technologies described above, the invention provides a kind of array base palte, comprise: grid line, data wire and the some pixel cells that defined by grid line and data wire intersection, described in each, pixel cell comprises pixel electrode, is formed with anti-fracture structure on described pixel electrode.

Wherein, described anti-fracture structure comprises: the subregional pixel electrode sunk structure in pixel electrode top.

Wherein, described anti-fracture structure comprises: the array that on pixel electrode, the pixel electrode sunk structure of some not overlapping subregions forms.

Wherein, the shape of described pixel electrode sunk structure, size are all identical.

Wherein, described pixel electrode sunk structure comprises: rectangular depression, circular depressed, oval depressions are one of at least.

Wherein, the degree of depth of described pixel electrode sunk structure is greater than the thickness of pixel electrode, is less than the thickness of insulating layer sum of pixel electrode recess side.

The present invention also provides a kind of display unit, comprises the array base palte described in above-mentioned any one.

(3) beneficial effect

The present invention is by forming anti-fracture structure at pixel electrode, when flexible display apparatus is crooked, anti-fracture structure makes pixel electrode force dispersion, thereby the probability that has reduced to cause pixel electrode fracture when flexible display apparatus is crooked, has guaranteed that flexible display apparatus can normally show.

Accompanying drawing explanation

Fig. 1 is the schematic diagram (only showing a dot structure) of a kind of array base palte of prior art.

Fig. 2 a is the schematic diagram of a kind of array base palte of the embodiment of the present invention;

Fig. 2 b is that Fig. 2 a is along the schematic cross-section of A-A;

Fig. 3 is the schematic diagram of the another kind of array base palte of the embodiment of the present invention;

Fig. 4 is the schematic diagram of another array base palte of the embodiment of the present invention.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.

The array base palte of the present embodiment comprises: grid line, data wire and the some pixel cells that defined by grid line and data wire intersection, described in each, pixel cell comprises pixel electrode.In order to have reduced to cause the probability of pixel electrode fracture when flexible display apparatus is crooked, described in each, pixel cell comprises pixel electrode, is formed with anti-fracture structure on described pixel electrode.

Anti-fracture structure can comprise the subregional pixel electrode sunk structure in pixel electrode top, and pixel electrode is not in same plane.

As shown in Fig. 2 a and 2b, array base palte comprises from the bottom to top successively along the cross section structure at A-A place in Fig. 2 a: underlay substrate 210, gate insulation layer 220, data wire 231 and power line 232, passivation layer 240, resin bed 250, pixel electrode 270 and pixel defining layer 280.A part of region on pixel electrode 270 is formed with a circular pixel electrode depression 271.Because the pixel electrode 270 in pixel electrode depression 271 is stressed hardly in the complete process of panel, there is not the problem being fractureed, so when crooked, the probability of pixel electrode 270 fractures reduces greatly.

Certainly, the structure of pixel electrode depression can also be other shape, as: rectangle or ellipse.The rectangular depression of strip as shown in Figure 3, the rectangular depression of two strips forms " * ".

Further, anti-fracture structure can also comprise the array that the pixel electrode sunk structure of some not overlapping subregions on pixel electrode forms.Preferably, in the array that pixel electrode sunk structure forms, shape, the size of each pixel electrode sunk structure are all identical.As shown in Figure 4, show the array being recessed to form by circular pixel electrode, each circular pixel electrode depression size is identical, makes like this pixel electrode of sunk part not stressed evenly, and fracture probability further reduces.

The degree of depth of pixel electrode depression can be less than, be more than or equal to the thickness of pixel electrode.When being less than pixel electrode thickness, in BENDING PROCESS, pixel electrode is stressed still very large, therefore, preferably, makes the degree of depth of pixel electrode sunk structure be greater than the thickness of pixel electrode, is less than the thickness of insulating layer sum of pixel electrode recess side.As shown in Figure 2, the depth d of pixel electrode depression 271 is just in time the thickness of resin bed 250.

The present invention main improved be to be formed with pixel electrode sunk structure on the pixel electrode of array base palte so that flexible display apparatus pixel electrode easy fracture not when bending.Pixel electrode is all identical with existing array base palte with position relationship and the annexation of the thin-film transistor of array base palte.When making, as long as pixel electrode lower floor forms the hole of depression to the region in requisition for depression, then form pixel electrode, repeat no more herein.

The present invention also provides a kind of display unit that comprises above-mentioned array base palte, this display unit is flexible display apparatus, can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, oled panel, mobile phone, panel computer, television set, display, notebook computer, DPF, navigator.

Above execution mode is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims

1. An array substrate, comprising: a gate line, a data line, and several pixel units defined by intersections of the gate line and the data line, each of the pixel units includes a pixel electrode, and it is characterized in that an anti- Fractured structure.

2 . The array substrate according to claim 1 , wherein the fracture prevention structure comprises: a pixel electrode recess structure in a partial area on the pixel electrode.

3 . The array substrate according to claim 1 , wherein the breakage prevention structure comprises: an array formed of pixel electrode recess structures in several non-overlapping partial regions on the pixel electrode. 4 .

4. The array substrate according to claim 3, wherein the shape and size of the pixel electrode recess structures are the same.

5. The array substrate according to any one of claims 2-4, wherein the pixel electrode recess structure comprises at least one of: a rectangular recess, a circular recess, and an elliptical recess.

6. The array substrate according to any one of claims 2-4, wherein the depth of the pixel electrode recess structure is greater than the thickness of the pixel electrode, and smaller than the sum of the thicknesses of the insulating layers on the side of the pixel electrode recess.

7. A display device, comprising the array substrate according to any one of claims 1-6.