CN113805374A

CN113805374A - Display panel and display

Info

Publication number: CN113805374A
Application number: CN202111085772.6A
Authority: CN
Inventors: 卢劲松; 洪文进; 许哲豪; 孙松; 郑浩旋
Original assignee: HKC Co Ltd; Beihai HKC Optoelectronics Technology Co Ltd
Current assignee: HKC Co Ltd; Beihai HKC Optoelectronics Technology Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2021-12-17

Abstract

The application provides a display panel and a display, wherein the display panel includes: the display panel further comprises a first conducting layer and a second conducting layer which are used for grounding, the first conducting layer is electrically connected with the second conducting layer, the first conducting layer is arranged on the surface, deviating from the first substrate, of the first polarizing layer, and the second conducting layer is arranged on the surface, deviating from the second substrate, of the second polarizing layer; the display is provided with the display panel; through adopting above-mentioned technical scheme, set up first conducting layer in the one side that deviates from the first base plate on first polarisation layer, set up the second conducting layer in the one side that deviates from the second base plate on second polarisation layer, draw ground connection through first conducting layer of peripheral connection and second conducting layer simultaneously, can improve display panel's electrostatic protection ability.

Description

Display panel and display

Technical Field

The present application relates to the field of liquid crystal display technologies, and more particularly, to a display panel and a display.

Background

In order to realize the ESD (Electro-Static-Discharge) requirement of a TFT-LCD (Thin Film Transistor-Liquid Crystal Display), a common method is to design an ESD protection circuit on a driving circuit portion of an Open cell (Liquid Crystal panel), or to design an ESD protection structure on a back plate of an OC and a body case, but the OC is used as a core of a Display device and is most sensitive to ESD, for example, Static electricity affects voltage difference at two sides of a Liquid Crystal, and when a Display product is turned off, the Liquid Crystal cannot be completely restored to an initial state, thereby further affecting Display quality; therefore, in view of this, it is necessary to improve the ESD protection capability of the display panel.

Disclosure of Invention

The present application provides a display panel and a display, so as to solve the technical problem of insufficient anti-static capability of the display panel.

In order to achieve the above object, the technical solution adopted in the present application is a display panel, including a first polarizing layer, a first substrate, a liquid crystal layer, a second substrate and a second polarizing layer that are stacked in sequence, the display panel further includes: the first conducting layer is electrically connected with the second conducting layer, the first conducting layer is arranged on the surface, deviating from the first substrate, of the first polarizing layer, and the second conducting layer is arranged on the surface, deviating from the second substrate, of the second polarizing layer.

Through adopting above-mentioned technical scheme, set up first conducting layer in the one side that deviates from the first base plate on first polarisation layer, set up the second conducting layer in the one side that deviates from the second base plate on second polarisation layer, draw ground connection through first conducting layer of peripheral connection and second conducting layer simultaneously, can improve the free ESD protective capability of display panel. Therefore, the display panel monomer can form extremely effective ESD protection;

in addition, after the assembly of the bare liquid crystal box is completed, conducting layers are manufactured on two sides to form a first conducting layer and a second conducting layer, and the conducting layers are manufactured on two sides of the bare liquid crystal box, so that the processing of the first conducting layer and the second conducting layer is facilitated; meanwhile, the first conducting layer is arranged on the first polarizing layer instead of the first substrate, and the second conducting layer is arranged on the second polarizing layer instead of the second substrate, so that the first substrate and the second substrate are prevented from being required to be provided with conducting layers and keeping larger thickness, and the thickness of the first substrate and the second substrate can be reduced, and the thickness of the display panel is thinner.

In one embodiment, the first conductive layer overlies the first polarizing layer and the second conductive layer overlies the second polarizing layer; in another embodiment, the first conductive layer covers the first polarizing layer or the second conductive layer covers the second polarizing layer.

By adopting the technical scheme, the first conducting layer and the second conducting layer are of the whole-surface structure and can be arranged on the first polarizing layer and the second polarizing layer through coating, coating or spraying technologies, or the first conducting layer and the second conducting layer can be formed by attaching ready-made conducting films, and the forming modes of the first conducting layer and the second conducting layer are simple and reliable.

In one embodiment, the first conductive layer and the second conductive layer are mesh structures; in another embodiment, the first conductive layer or the second conductive layer is a mesh structure.

Through adopting above-mentioned technical scheme, first conducting layer and second conducting layer are network structure for first conducting layer and second conducting layer have the fretwork part, have reduced the influence to the light-emitting.

In one embodiment, a light-shielding matrix is further disposed on the first substrate, and the light-shielding matrix is disposed to overlap with the first conductive layer and the second conductive layer; in another embodiment, a light-shielding matrix is further disposed on the first substrate, and the light-shielding matrix is overlapped with the first conductive layer or the second conductive layer.

By adopting the technical scheme, the shading matrix is overlapped with the first conducting layer and the second conducting layer, so that the influence of the first conducting layer and the second conducting layer on light emitting is reduced.

In one embodiment, a lateral dimension of the first conductive layer and/or the second conductive layer is smaller than a lateral dimension of the light shielding matrix; the longitudinal dimension of the first conductive layer and/or the second conductive layer is smaller than the longitudinal dimension of the light-shielding matrix.

By adopting the technical scheme, the influence of the first conductive layer and the second conductive layer on the light emission of the display area of the display panel is reduced.

In one embodiment, the first conductive layer and the second conductive layer are full-face transparent conductive films.

In another embodiment, if the first conductive layer and the second conductive layer are mesh structures, transparent conductive materials such as conductive films, conductive coating liquids, transparent conductive inks, and screen printing silver pastes can be selected, and the manufacturing method can be determined according to the material characteristics of the transparent conductive materials, such as etching methods available for the conductive films, and screen printing techniques available for the conductive coating liquids, the transparent conductive inks, and the screen printing silver pastes.

By adopting the technical scheme, the first conducting layer and the second conducting layer are convenient to manufacture.

In one embodiment, the first and second conductive layers have a visible light transmission of greater than 88%.

By adopting the technical scheme, the influence of the first conducting layer and the second conducting layer on light emission is reduced.

In one embodiment, the display panel further includes a clamping member for grounding, the clamping member electrically connecting the first conductive layer and the second conductive layer.

By adopting the technical scheme, the first conducting layer and the second conducting layer are convenient to be electrically connected.

In one embodiment, the clamping member is connected with at least two sides of the display panel; the clamping parts are continuously or discontinuously arranged along the extending direction of the edge of the display panel.

By adopting the technical scheme, the clamping components can be arranged on four sides, or three sides or two sides of the display panel, so that static electricity can be diffused more conveniently, and static electricity accumulation can be prevented; the clamping components are continuously arranged, so that the grounding effect is better; the clamping parts are arranged discontinuously, so that the cost can be saved.

In one embodiment, the clamping member is of a "U" configuration or a "C" configuration.

Through adopting above-mentioned technical scheme, reduce the influence to the roughness on display panel surface, reduce display panel thickness simultaneously, reduced display panel's frame width.

The embodiment further provides a display, which comprises a backlight module and the display panel, wherein the display panel is installed on the light emitting side of the backlight module.

By adopting the technical scheme, the electrostatic protection capability of the display can be improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first cross-sectional view of a display panel according to a first embodiment of the present disclosure;

fig. 2 is a top view of a display panel according to an embodiment of the present application;

fig. 3 is a second cross-sectional view of a display panel according to a first embodiment of the present disclosure;

fig. 4 is a cross-sectional view of a display panel provided in the second embodiment of the present application;

fig. 5 is a schematic structural diagram of a display provided in the third embodiment of the present application.

The figures are numbered:

100-a display panel;

1-a first polarizing layer; 2-a first substrate; 3-a liquid crystal layer; 4-a second substrate; 5-a second polarizing layer; 6-a first conductive layer; 7-a second conductive layer; 8-frame glue; 9-a clamping member; 10-a light-shielding matrix; 11-backlight module.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application, and do not indicate that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and are thus not to be construed as limiting the present application.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. Specific implementations of the present application are described in more detail below with reference to specific embodiments:

the first embodiment is as follows:

as shown in fig. 1, the present application provides a display panel 100, which includes a first polarizing layer 1, a first substrate 2, a liquid crystal layer 3, a second substrate 4, and a second polarizing layer 5, which are sequentially stacked; the display panel 100 further includes: the first conducting layer 6 and the second conducting layer 7 are used for grounding, the first conducting layer 6 is electrically connected with the second conducting layer 7, and the first conducting layer 6 is arranged on the surface of the first polarizing layer 1, which is far away from the first substrate 2; the second conductive layer 7 is provided on a surface of the second polarizing layer 5 facing away from the second substrate 4.

Specifically, the first substrate 2 and the second substrate 4 are bonded and fixed through frame glue 8, an accommodating cavity for arranging the liquid crystal layer 3 is formed by enclosing the first substrate 2, the second substrate 4 and the frame glue 8, and the liquid crystal layer 3 is limited in the accommodating cavity; a shading matrix 10, a color filter layer, a common electrode, spacers (including a main spacer and an auxiliary spacer) and an alignment film are sequentially manufactured on the first substrate 2; a TFT device circuit, i.e., a thin film transistor, is formed on the second substrate 4; the first polarizing layer 1 is positioned on one side of the first substrate 2, which is far away from the liquid crystal layer 3, the second polarizing layer 5 is positioned on one side of the second substrate 4, which is far away from the liquid crystal layer 3, and the first polarizing layer 1 and the second polarizing layer 5 are fixed on the first substrate 2 and the second substrate 4 in an attaching manner; the first conducting layer 6 is connected with the first polarizing layer 1, the first conducting layer 6 is located on one side, away from the first substrate 2, of the first polarizing layer 1, the second conducting layer 7 is connected with the second polarizing layer 5, the second conducting layer 7 is located on one side, away from the second substrate 4, of the second polarizing layer 5, the first conducting layer 6 is electrically connected with the second conducting layer 7, and at least one of the first conducting layer 6 and the second conducting layer 7 is connected through a peripheral circuit to be led out to be grounded.

The principle of preventing static electricity of the display panel 100 provided in this embodiment is as follows:

firstly, the working principle of the TFT-LCD is explained, a liquid crystal layer 3 is arranged between a first substrate 2 (which can be a color film substrate) and a second substrate 4 (which can be an array substrate), an electric field is formed by voltages applied to a pixel electrode and a common electrode, liquid crystal molecules of the liquid crystal layer 3 deflect under the action of the electric field, and the deflection angles of the liquid crystal molecules are different along with different electric field sizes. The existing TFT-LCD mainly has three problems, firstly, when the TFT-LCD is used in a dry environment, static electricity is easily gathered at the periphery of a Bar Cell (a naked liquid crystal Cell) of the TFT-LCD, the existence of the static electricity can interfere with the actual electric field between a pixel electrode and a common electrode, and the difference between the actual electric field and the electric field formed by pre-input voltage further influences display; secondly, when the TFT-LCD is used as a human-computer interaction component, the TFT-LCD is easily subjected to electrostatic interference, so that the use experience of a customer is reduced; thirdly, when the TFT-LCD is manufactured, stored, transported and carried at the back stage of the Open cell, the generated static electricity has the risk of product failure, and the loss is brought to enterprises. Therefore, in view of this, it is necessary to improve the ESD protection capability of the display panel 100.

In order to meet the ESD protection requirement of a display product, it is a common practice to design an ESD protection circuit on a driving circuit portion of an Open cell, or design an ESD protection structure on a backplane of a display device and in a body housing, but the Open cell is the core of the display device and is most sensitive to ESD, and therefore, the ESD protection requirement is not designed from the most core component in the prior art.

The display panel 100 of this embodiment completes the assembly of the bare liquid crystal cell in the preparation, namely, completes the assembly of the first polarizing layer 1, the first substrate 2, the liquid crystal layer 3, the second substrate 4 and the second polarizing layer 5, and then the conducting layers are prepared on both sides of the bare liquid crystal cell, namely, the first conducting layer 6 is arranged on one side of the first polarizing layer 1 deviating from the first substrate 2, the second conducting layer 7 is arranged on one side of the second polarizing layer 5 deviating from the second substrate 4, and meanwhile, the first conducting layer 6 and the second conducting layer 7 are connected through the peripheral circuit to lead out the grounding, so that the ESD protection capability of the display panel 100 can be improved. Thus, the display panel 100 itself can be provided with an extremely effective ESD protection.

Through adopting above-mentioned technical scheme, set up first conducting layer 6 in the one side that deviates from first base plate 2 of first polarisation layer 1, set up second conducting layer 7 in the one side that deviates from second base plate 4 of second polarisation layer 5, draw ground connection through first conducting layer 6 of peripheral circuit connection and second conducting layer 7 simultaneously, can improve the free ESD protective capability of display panel 100. Thus, the display panel 100 itself can form an extremely effective ESD protection;

in addition, after the assembly of the bare liquid crystal box is completed, a conductive layer is manufactured on the outer side of the polarization layer to form a first conductive layer 6 and a second conductive layer 7, the conductive layer has a certain pattern, can be manufactured by etching, silk-screen printing and other technologies, and has the thickness of

The conductive layer is preferably formed outside the polarizing layer, and advantages thereof include: the adhesion of the conductive layer is good, which is beneficial to improving the reliability of the product, if the conductive layer is manufactured between the substrate and the polarizing layer, the adhesion effect of the polarizing plate can be influenced, the adhesion of the polarizing plate is reduced, vacuum bubbles appear, and if the adhesion is not good, the reliability and the service life of the product in the using process can be influenced; secondly, the conducting layer is manufactured outside the polarizing layer, so that the optical function of the polarizing plate cannot be influenced, and if the conducting layer is manufactured between the substrate and the polarizing layer, the polarizing plate can be slightly uneven after being attached, the optical effect is influenced, and chromatic aberration is caused; thirdly, the conductive layer is manufactured on the outer side of the polarizing layer, which is more beneficial to actual manufacturing, currently, display panel factories in the industry generally set the back-end process of the box-forming process according to the sequence of cutting, attaching and binding, if the conductive layer is manufactured on the outer side of the polarizing layer, the conductive layer can be manufactured by an outsourcing agency factory after the box-forming process is finished, no additional equipment is needed, and the actual requirements of products can be more beneficial; and fourthly, the conducting layer is manufactured on the outer side of the polarizing layer, is more easily connected with an external ground wire, has better grounding effect and is easy to radiate heat.

In one embodiment, a first conductive layer 6 covers the first polarizing layer 1 and a second conductive layer 7 covers the second polarizing layer 5; in another embodiment, the first conductive layer 6 covers the first polarizing layer 1 or the second conductive layer 7 covers the second polarizing layer 5.

Specifically, the first conductive layer 6 and the second conductive layer 7 have a full-surface structure, and the first conductive layer 6 and the second conductive layer 7 are made of a transparent conductive material.

By adopting the above technical scheme, the first conductive layer 6 and the second conductive layer 7 are of a whole-surface structure, and can be arranged on the first polarizing layer 1 and the second polarizing layer 5 by a coating, coating or spraying technology, or can be formed by attaching a ready-made conductive film to form the first conductive layer 6 and the second conductive layer 7, and the forming mode of the first conductive layer 6 and the second conductive layer 7 is simple and reliable.

As shown in fig. 2 and 3, in one embodiment, the first conductive layer 6 and the second conductive layer 7 are mesh structures; in another embodiment, the first conductive layer 6 or the second conductive layer 7 is a mesh structure.

Specifically, the first conductive layer 6 and the second conductive layer 7 may be fabricated into a predetermined pattern such as a mesh structure by etching or screen printing.

By adopting the technical scheme, the first conducting layer 6 and the second conducting layer 7 are of the net structures, so that the first conducting layer 6 and the second conducting layer 7 are provided with hollow parts, and the influence on light emitting is reduced.

In one embodiment, a light-shielding matrix 10 is further disposed on the first substrate 2, and the light-shielding matrix 10 is disposed to overlap the first conductive layer 6 and the second conductive layer 7; in another embodiment, a light-shielding matrix 10 is further disposed on the first substrate 2, and the light-shielding matrix 10 is disposed to overlap with the first conductive layer 6 or the second conductive layer 7.

Specifically, the light-shielding matrix 10 is provided with a plurality of light-emitting holes, and each light-emitting hole is opposite to the hollow portions of the first conductive layer 6 and the second conductive layer 7.

By adopting the above technical scheme, the shading matrix 10 is overlapped with the first conductive layer 6 and the second conductive layer 7, and the influence of the first conductive layer 6 and the second conductive layer 7 on light emission is reduced.

In one embodiment, the lateral dimension of at least one of the first conductive layer 6 and the second conductive layer 7 is smaller than the lateral dimension of the light-shielding matrix 10; at least one of the first conductive layer 6 and the second conductive layer 7 has a longitudinal dimension smaller than that of the light-shielding matrix 10.

Specifically, the transverse direction of the light shielding matrix 10 is the length direction of the light shielding matrix 10, the longitudinal direction of the light shielding matrix 10 is the width direction of the light shielding matrix 10, and the light emitting direction of the light shielding matrix 10 is perpendicular to the transverse direction and the longitudinal direction of the light shielding matrix 10; it should be further explained that the transverse dimension and the longitudinal dimension of the first conductive layer 6 or the second conductive layer 7 in the light emitting direction are slightly smaller than those of the light shielding matrix 10, so that the first conductive layer 6 and the second conductive layer 7 do not affect the light transmission of the display area of the display panel 100.

In a detailed manner, the light-shielding matrix 10 of the first substrate 2 is a black matrix, and has a matrix structure arranged horizontally and vertically, each pixel matrix has a horizontal width of 5 μm to 200 μm and a vertical width of 5 μm to 400 μm, and if the first conductive layer 6 and the second conductive layer 7 are disposed to overlap the light-shielding matrix 10, the horizontal and vertical dimensions are preferably slightly smaller than the dimensions of the light-shielding matrix 10, and the light transmission in the display region is not affected as much as possible.

It should be further explained that the first conductive layer 6 and the second conductive layer 7 may be made of other metal materials such as aluminum or copper when forming a pattern structure such as a mesh structure, and if such a non-light-transmitting material is formed by etching, the pattern-formed portion is disposed to overlap the light-shielding matrix 10 of the first substrate 2, so that light transmission in the display region is not affected.

By adopting the above technical scheme, the influence of the first conductive layer 6 and the second conductive layer 7 on the light emission of the display area of the display panel 100 is reduced.

In one embodiment, first conductive layer 6 and second conductive layer 7 are full-face transparent conductive films.

Alternatively, in this embodiment, the first conductive layer 6 and the second conductive layer 7 may be formed as a whole conductive layer. Since the first conductive layer 6 is located between the display panel 100 and the human eye side, and the second conductive layer 7 is located between the polarizer and the backlight module, if the conductive layer is a whole-surface structure, a transparent conductive film, such as a conductive film (ITO film), a conductive coating liquid, a transparent conductive ink, etc., is preferably selected, and the manufacturing method can be determined according to the material characteristics of the transparent conductive material, such as a coating method for the conductive film, a coating method for the conductive coating liquid, a spraying technique for the transparent conductive ink, or a ready-made conductive film can be directly pasted.

In another embodiment, if the first conductive layer 6 and the second conductive layer 7 are mesh structures, transparent conductive materials, such as conductive films, conductive coating liquids, transparent conductive inks, and silk-screen silver pastes, can be selected, and the manufacturing method can be determined according to the material characteristics of the transparent conductive materials, such as etching methods for the conductive films, and silk-screen printing techniques for the conductive coating liquids, the transparent conductive inks, and the silk-screen silver pastes.

By adopting the technical scheme, the first conductive layer 6 and the second conductive layer 7 are convenient to manufacture.

In one embodiment, the first conductive layer 6 and the second conductive layer 7 have a visible light transmittance of greater than 88%.

Preferably, the first conductive layer 6 and the second conductive layer 7 have a visible light transmittance of more than 90%.

Specifically, the wavelength band of visible light is 380nm to 780 nm.

By adopting the technical scheme, the influence of the first conductive layer 6 and the second conductive layer 7 on light extraction is reduced.

Example two:

as shown in fig. 4, in one embodiment, the display panel 100 further includes a clip member 9 for leading out a ground, and the clip member 9 electrically connects the first conductive layer 6 and the second conductive layer 7.

Optionally, the shape of the clamping member 9 is "U" or "C", the clamping member 9 may be made of silver paste or may be attached with a conductive film, the clamping member 9 connects the first conductive layer 6 and the second conductive layer 7, and then leads out the ground, which may be connected to a ground PIN (PIN) corner around the liquid crystal cell.

By adopting the above technical solution, the electrical connection between the first conductive layer 6 and the second conductive layer 7 is facilitated.

In one embodiment, the clamping member 9 is connected to at least two sides of the display panel 100; the holding member 9 is continuously or intermittently provided along the extending direction of the edge of the display panel 100.

By adopting the above technical scheme, the clamping component 9 can be arranged on four sides of the display panel 100, or three sides or two sides thereof, which is more beneficial to diffusing static electricity and preventing static electricity accumulation; the clamping components 9 are continuously arranged, so that the grounding effect is better; the clamping part 9 is arranged discontinuously, so that the cost can be saved.

In one embodiment, the clamping member 9 is of a "U" configuration or a "C" configuration.

By adopting the technical scheme, the influence on the flatness of the surface of the display panel 100 is reduced, the thickness of the display panel 100 is reduced, and the frame width of the display panel 100 is reduced.

Example three:

as shown in fig. 5, the present application further provides a display, which includes a backlight module 11 and the display panel 100, wherein the display panel 100 is mounted on the light-emitting side of the backlight module.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. The utility model provides a display panel, includes first polarisation layer, first base plate, liquid crystal layer, second base plate and the second polarisation layer that stacks gradually, its characterized in that, display panel still includes: the first conducting layer is electrically connected with the second conducting layer, the first conducting layer is arranged on the surface, deviating from the first substrate, of the first polarizing layer, and the second conducting layer is arranged on the surface, deviating from the second substrate, of the second polarizing layer.

2. The display panel of claim 1, wherein the first conductive layer covers the first polarizing layer; and/or

The second conductive layer covers the second polarizing layer.

3. The display panel according to claim 1, wherein the first conductive layer and/or the second conductive layer is a mesh structure; and a shading matrix is also arranged on the first substrate and is overlapped with the first conducting layer and/or the second conducting layer.

4. The display panel according to claim 3, wherein a lateral dimension of the first conductive layer and/or the second conductive layer is smaller than a lateral dimension of the light-shielding matrix, and a longitudinal dimension of the first conductive layer and/or the second conductive layer is smaller than a longitudinal dimension of the light-shielding matrix.

5. The display panel according to claim 1, wherein the first conductive layer and the second conductive layer are full-surface transparent conductive films.

6. The display panel according to claim 1, wherein the first conductive layer and the second conductive layer have a visible light transmittance of more than 88%.

7. The display panel according to any one of claims 1 to 6, wherein the display panel further comprises a clip member for grounding, the clip member electrically connecting the first conductive layer and the second conductive layer.

8. The display panel of claim 7, wherein the clamping member is coupled to at least two sides of the display panel; the clamping parts are continuously or discontinuously arranged along the extending direction of the edge of the display panel.

9. The display panel of claim 7, wherein the clamping member has a "U" shaped structure or a "C" shaped structure.

10. A display comprising a backlight module and the display panel of any one of claims 1 to 9, wherein the display panel is mounted on the light-emitting side of the backlight module.