WO2019127764A1

WO2019127764A1 - Ips-type display module and display device

Info

Publication number: WO2019127764A1
Application number: PCT/CN2018/073530
Authority: WO
Inventors: 廖亿彬; 张�林; 陶治橙; 刘忠余; 李孟祥; 何基强
Original assignee: 信利半导体有限公司
Priority date: 2017-12-28
Filing date: 2018-01-20
Publication date: 2019-07-04
Also published as: CN108089752A

Abstract

An IPS type display module and a display device. The IPS-type display module comprises an IPS panel (1) which does not have a conductive shielding layer, and a touch panel (2). The touch panel (2) is bonded to a light-emitting surface of the IPS panel (1), and a touch electrode layer (22) of the touch panel (2) also serves as a conductive shielding layer of the IPS panel (1). The visual area of the IPS-type display module has low reflectivity and good display effect; furthermore, when the IPS-type display module is used together with a black touch panel attached thereto, the off-screen black of the visual area of the IPS-type display module is similar to the ink black of the peripheral area thereof, achieving an excellent integrated screen-off black effect.

Description

IPS type display module and display device

Technical field

The present invention relates to the field of display, and in particular, to an IPS type display module and a display device.

Background technique

As shown in FIG. 1 , the existing IPS panel includes a relatively bonded IPS substrate 11 ′ and a color filter substrate 12 ′, and the IPS substrate 11 ′ and the color filter substrate 12 ′ are filled with a liquid crystal material 13 ′, wherein The IPS substrate 11' includes a first transparent substrate 111', an IPS-TFT layer 112' and a first alignment layer 113' which are sequentially stacked, and the color filter substrate 12' includes a second transparent substrate 121' which is sequentially stacked. a color film layer 122', an insulating protective layer 123', a conductive shielding layer 124', and a second alignment layer 125'. The material between the functional layers is different, and the refractive index of the light is also different, which causes the external light to reflect from one functional layer to the other.

In addition, due to the high reflectivity, the display panel is not completely black when it is in the screen, but presents a "gray" and "transverse" color effect, when used with a black front cover or a black touch screen. The ink black on the peripheral area of the display module and the "grey" on the visible area on the visible area have a clear dividing line, which affects the black effect of the display panel.

technical problem

In order to solve the above deficiencies of the prior art, the present invention provides an IPS type display module and a display device. The visible area of the IPS type display module not only has a low reflectivity, but also has a good display effect, and when used in conjunction with a black touch screen, the black color of the visible area and the ink black of the peripheral area are closer. It has a good black screen effect.

Technical solution

The technical problem to be solved by the present invention is achieved by the following technical solutions:

An IPS type display module includes an IPS panel and a touch screen that do not have a conductive shielding layer. The touch screen is attached to the light emitting surface of the IPS panel, and the touch electrode layer of the touch screen doubles as the conductive layer of the IPS panel. Shield.

Further, an electrostatic ring for grounding is disposed on a periphery of the touch electrode layer.

Further, the outer side of the electrostatic ring is electrically connected to at least one static block.

Further, the electrostatic block is triangular.

Further, the touch screen has a black border.

Further, the touch screen includes a protective cover plate and a touch electrode layer and an ink layer disposed on a back surface of the protective cover, the touch electrode layer is located on the visible area, and the ink layer is located on the peripheral area.

Further, the IPS panel includes a relatively bonded IPS substrate and a color filter substrate, and the IPS substrate and the color filter substrate are filled with a liquid crystal material.

Further, the IPS substrate includes a first transparent substrate and an IPS-TFT layer and a first alignment layer disposed in sequence on the first transparent substrate toward one side of the liquid crystal material.

Further, the color filter substrate includes a second transparent substrate and a color film layer and a second alignment layer disposed on the second transparent substrate toward one side of the liquid crystal material.

A display device includes the above IPS type display module.

Beneficial effect

1. The IPS type display module removes the existing conductive shielding layer in the IPS panel, and the touch electrode layer of the touch screen is doubled by using the same material of the touch electrode layer and the existing conductive shielding layer. The conductive shielding layer of the IPS panel to eliminate static electricity acting on the IPS panel from the front and sides and shielding electromagnetic interference acting on the IPS panel, which reduces an ITO film, thereby reducing the IPS The primary reflection of the external light by the panel not only reduces the reflectivity of the IPS panel, but also obtains a better display effect, and also reduces material cost and process cost;

2. The IPS type display module reduces the reflectivity of the IPS panel and deepens the black color of the visible area in the visible screen. When used with the black touch screen, the black and peripheral of the visible area of the visible area The ink black of the area is closer, and it has a good black screen effect.

DRAWINGS

1 is a schematic view of a conventional IPS panel;

2 is a schematic diagram of an IPS type display module provided by the present invention;

3 is a schematic view of a touch electrode layer and an electrostatic ring provided by the present invention;

4 is a schematic view of a touch electrode layer and another electrostatic ring provided by the present invention.

Embodiments of the invention

The invention will now be described in detail in conjunction with the drawings and embodiments.

实施例一Embodiment 1

As shown in FIG. 2 , an IPS type display module includes an IPS panel 1 and a touch screen 2 that do not have a conductive shielding layer. The touch screen 2 is attached to the light emitting surface of the IPS panel 1 , and the touch screen 2 is The touch electrode layer 22 doubles as the conductive shielding layer of the IPS panel 1.

The IPS type display module removes the existing conductive shielding layer in the IPS panel 1. The touch electrode layer of the touch screen 2 is the same as the material of the existing conductive shielding layer. 22 doubles as the conductive shielding layer of the IPS panel 1 to eliminate static electricity acting on the IPS panel 1 from the front and side and shielding electromagnetic interference acting on the IPS panel 1, which reduces an ITO film, The primary reflection of the external light by the IPS panel 1 is reduced, which not only reduces the light reflectivity of the IPS panel 1 , but also obtains a better display effect, and also reduces material cost and process cost.

Preferably, the touch screen 2 and the IPS panel 1 are respectively bonded together by a transparent adhesive 3 such as OCA glue or solid glue, or may be attached together by a frame glue or the like; the material of the touch electrode layer 22 is preferably However, it is not limited to indium tin oxide (ITO), and may be other transparent conductive materials such as indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, and the like.

Preferably, as shown in FIG. 3, an electrostatic ring 221 for grounding is disposed on a periphery of the touch electrode layer 22, and both ends of the electrostatic ring 221 serve as a ground end, and the IPS type display module can be used. The static electricity generated in the process is treated from the grounding ends of the two ends to improve the antistatic performance of the IPS type display module; the electrostatic ring 221 may be an ITO trace, a copper trace or other conductive material trace.

As shown in FIG. 4, at least one electrostatic block 222 is electrically connected to the outer side of the electrostatic ring 221 for introducing the external static electricity into the electrostatic ring 221, and finally conducting the ground treatment to improve the antistatic performance. The material of the electrostatic block 222 may be ITO, copper or other conductive material, and the shape is preferably, but not limited to, a triangle.

The touch screen 2 has a border color of any color such as white, red or blue, but preferably, the touch screen 2 has a black border, that is, the ink layer 23 on the peripheral area of the touch screen 2 is black ink.

The IPS type display module reduces the light reflectivity of the IPS panel 1 and deepens the black color of the visible area in the visible screen. When used in conjunction with the black touch screen 2, the visible area of the visible area is black and peripheral. The ink black of the area is closer to the screen, and it has a good black screen effect.

The touch screen 2 includes a protective cover 21 and a touch electrode layer 22 and an ink layer 23 disposed on the back surface of the protective cover 21, the touch electrode layer 22 is located on the visible area, and the ink layer 23 is located at the periphery On the area.

The IPS panel 1 includes a relatively bonded IPS substrate 11 and a color filter substrate 12, and the IPS substrate 11 and the color filter substrate 12 are filled with a liquid crystal material 13; wherein the IPS substrate 11 includes a first transparent substrate. And an IPS-TFT layer 112 and a first alignment layer 113 disposed on one side of the first transparent substrate 111 facing the liquid crystal material 13 in sequence; the color filter substrate 12 includes a second transparent substrate 121 and are sequentially disposed The second transparent substrate 121 faces the color film layer 122 and the second alignment layer 125 on one side of the liquid crystal material 13.

The specific structure in the IPS-TFT layer 112 is a prior art and will not be described in detail; the alignment directions of the first alignment layer 113 and the second alignment layer 125 are the same, and the material is preferably but not limited to polyimide. (PI).

An insulating protective layer 123 is further disposed between the color film layer 122 and the second alignment layer 125. The insulating protective layer 123 may be made of an organic insulating material or an inorganic insulating material.

a first polarizing layer 14 is disposed on a surface of the IPS substrate 11 facing away from the liquid crystal material 13 , and a second polarizing layer 15 is disposed on a surface of the color filter substrate 12 facing away from the liquid crystal material 13 . The polarization axes of a polarizing layer 14 and the second polarizing layer 15 are perpendicular.

实施例二Embodiment 2

A display device includes the IPS type display module described in the first embodiment.

The embodiments described above are only illustrative of the embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention, but the technical solutions obtained in the form of equivalent substitution or equivalent transformation. All should fall within the scope of protection of the present invention.

Claims

An IPS type display module, comprising: an IPS panel and a touch screen having no conductive shielding layer, wherein the touch screen is attached to a light emitting surface of the IPS panel, and the touch electrode layer of the touch screen doubles Conductive shield of the IPS panel.
The IPS type display module according to claim 1, wherein an electrostatic ring for grounding is disposed on a periphery of the touch electrode layer.
The IPS type display module according to claim 2, wherein at least one electrostatic block is electrically connected to the outside of the electrostatic ring.
The IPS type display module according to claim 3, wherein the electrostatic block is triangular.
The IPS type display module according to any one of claims 1 to 3, wherein the touch screen has a black border.
The IPS type display module according to any one of claims 1 to 4, wherein the touch screen comprises a protective cover and a touch electrode layer and an ink layer disposed on a back surface of the protective cover, The touch electrode layer is on the visible area and the ink layer is on the peripheral area.
The IPS type display module according to any one of claims 1 to 6, wherein the IPS panel comprises a relatively bonded IPS substrate and a color filter substrate, and the IPS substrate and the color filter substrate are filled with Liquid crystal material.
The IPS type display module according to claim 7, wherein the IPS substrate comprises a first transparent substrate and an IPS-TFT layer sequentially disposed on a side of the first transparent substrate facing the liquid crystal material. And the first alignment layer.
The IPS type display module according to claim 7 or 8, wherein the color filter substrate comprises a second transparent substrate and a color sequentially disposed on a side of the second transparent substrate facing the liquid crystal material a film layer and a second alignment layer.
A display device comprising the IPS type display module according to any one of claims 1-9.