CN107632478B

CN107632478B - Curved surface liquid crystal display panel

Info

Publication number: CN107632478B
Application number: CN201711031748.8A
Authority: CN
Inventors: 安立扬
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2017-10-27
Filing date: 2017-10-27
Publication date: 2021-01-01
Anticipated expiration: 2037-10-27
Also published as: CN107632478A

Abstract

The invention provides a curved liquid crystal display panel. Every two adjacent pixel areas in the curved-surface liquid crystal display panel are a pixel group, two data lines corresponding to the two pixel areas in the same pixel group are adjacent, and a gap spacer and a black matrix strip for shielding the area are arranged in the area where the data line and the driving TFT are located in each pixel group, so that the slidable range of the gap spacer in the horizontal direction relative to the black matrix strip can be effectively increased, the gap spacer is prevented from sliding out of the shielding range of the black matrix, and poor display is avoided.

Description

Curved surface liquid crystal display panel

Technical Field

The invention relates to the technical field of display, in particular to a curved liquid crystal display panel.

Background

Liquid Crystal Displays (LCDs) have many advantages such as thin body, power saving, no radiation, and the like, and are widely used. Such as: liquid crystal televisions, mobile phones, Personal Digital Assistants (PDAs), digital cameras, computer screens, notebook computer screens, or the like, are dominant in the field of flat panel displays.

Generally, a liquid crystal display device includes a housing, a liquid crystal panel disposed in the housing, and a Backlight module (Backlight module) disposed in the housing. The Liquid Crystal display panel is mainly composed of an Array Substrate (Thin film transistor Array Substrate), a Color film Substrate (Color Filter Substrate, CF Substrate) and a Liquid Crystal Layer (Liquid Crystal Layer) arranged between the two substrates, and the Liquid Crystal display panel has the working principle that the rotation of Liquid Crystal molecules of the Liquid Crystal Layer is controlled by applying driving voltage to a pixel electrode of the TFT Substrate and a common electrode of the CF Substrate, and light of a backlight module is refracted to generate pictures.

In recent years, with the development of liquid crystal display technology, Curved (Curved) liquid crystal displays have been gradually introduced by various manufacturers, and are preferred by users because they have better viewing experience than general liquid crystal displays. In order to deal with the display abnormality caused by the curved surface of the panel, technologies such as integrating a Color On Array (COA) Color filter and integrating a gap spacer On an Array (POA) Array substrate are continuously applied to recent products, and the technical principle is mainly to integrate a film structure which is easy to be dislocated On the Array substrate uniformly and reduce the film structure On the CF side as much as possible. At present, COA and POA technologies are widely applied to curved surface products.

Specifically, in a Normal (Normal) architecture curved lcd, each sub-pixel in each pixel unit is sequentially arranged along the horizontal direction, as shown in fig. 1 and 2, and includes: the liquid crystal display panel comprises a first substrate and a second substrate, wherein a plurality of pixel electrodes 100, a plurality of horizontal scanning lines 200, a plurality of vertical data lines 300, a plurality of driving TFTs 400 and a plurality of gap spacers 500 which are arranged in an array are formed on the first substrate, one scanning line 200 is correspondingly arranged on each row of pixel electrodes 100, one data line 300 is correspondingly arranged on each column of pixel electrodes 100, one driving TFT400 is arranged between each pixel electrode 100 and the corresponding scanning line 200, and the gap spacers 500 are correspondingly positioned above the driving TFTs 400; the black matrix 600 is formed on the second substrate, the black matrix 600 includes a first black matrix strip 601 in the horizontal direction and a second black matrix strip 602 in the vertical direction, the position of the spacer 500 corresponds to the position of the first black matrix strip 601, when a general curved liquid crystal display is bent, the gap spacer 500 is easy to displace in the horizontal direction, for the curved liquid crystal display of the normal architecture, the gap spacer 500 is located at the position corresponding to the first black matrix strip 601 in the horizontal direction, and the gap spacer 500 is still within the range of the black matrix after being displaced in the horizontal direction on the substrate, so that the influence on the normal display of the liquid crystal display is small.

The corresponding Tri-gate driving architecture (Tri-gate) is an improved lcd driving architecture, and the remaining normal architectures are different in that the sub-pixels in each pixel unit are sequentially arranged along the vertical direction, the number of data lines is one third of the normal architecture, and the number of scan lines is three times of the normal architecture, as shown in fig. 3 and 4, a curved lcd with a Tri-gate driving architecture includes: the liquid crystal display panel comprises a first substrate and a second substrate, wherein a plurality of pixel electrodes 100 ', a plurality of horizontal scanning lines 200', a plurality of vertical data lines 300 ', a plurality of driving TFTs 400' and a plurality of gap spacers 500 'which are arranged in an array are formed on the first substrate, one scanning line 200' is correspondingly arranged on each row of pixel electrodes 100 ', one data line 300' is correspondingly arranged on each column of pixel electrodes 100 ', a driving TFT 400' is arranged between each pixel electrode 100 'and the corresponding data line 300', and the gap spacers 500 'are correspondingly positioned above the driving TFT 400'; the black matrix 600 'is formed on the second substrate, the black matrix 600' includes a first black matrix strip 601 'in a horizontal direction and a second black matrix strip 602' in a vertical direction, and the position of the spacer 500 corresponds to the position of the second black matrix strip 602 ', at this time, since the width of the second black matrix strip 602' in the horizontal direction is narrow, when the curved liquid crystal display is bent, if the gap spacer 500 'is displaced in the horizontal direction, the gap spacer easily slides out of the shielding range of the black matrix 600' and cannot be restored, and the problem of poor liquid crystal display is caused, and since the position where the driving TFT400 'is formed is higher than other positions on the first substrate, and the gap spacer 500' is more suitable for being arranged than other positions, the gap spacer 500 'is generally fixed above the driving TFT 400' when the POA technology is adopted.

Disclosure of Invention

The invention aims to provide a curved liquid crystal display panel which can prevent a gap spacer from sliding out of a shielding range of a black matrix and avoid poor display under the condition of adopting a three-grid driving framework.

In order to achieve the above object, the present invention provides a curved liquid crystal display panel, comprising: the first substrate and the second substrate are oppositely arranged;

the first substrate includes: the TFT array substrate comprises a first substrate base plate, a TFT layer and a pixel electrode layer, wherein the TFT layer and the pixel electrode layer are arranged on one side of the first substrate base plate, which is close to the second base plate; the second substrate includes: the black matrix is arranged on one side, close to the first substrate, of the second substrate base plate;

the TFT layer includes: a plurality of scan lines, a plurality of data lines, and a plurality of driving TFTs; the pixel electrode layer includes: a plurality of pixel electrodes arranged in an array; the plurality of scanning lines and the plurality of data lines are intersected to define a plurality of pixel regions which are arranged in an array mode, each pixel region is internally provided with at least one pixel electrode and at least one driving TFT, and the driving TFT is positioned between the pixel electrode in the pixel region where the driving TFT is positioned and the data line corresponding to the pixel region;

every two adjacent rows of pixel regions are a pixel group, and two data lines corresponding to the two rows of pixel regions in the same pixel group are adjacently arranged; the black matrix includes: each first black matrix strip correspondingly shields an area where a data line and a driving TFT in one pixel group are located; a gap spacer is provided in a region where the data line and the driving TFT are located in each pixel group.

The curved liquid crystal display panel further includes: a color resist layer; the color resistance layer is arranged between the TFT layer and the pixel electrode layer or arranged on one side of the second substrate close to the first substrate.

The color resist layer includes: the color filter comprises a plurality of color blocking blocks which are arranged in an array, wherein each color blocking block corresponds to one pixel area, the color of the color blocking blocks in the same row of pixel areas is the same, and the color of the color blocking blocks in the adjacent row of pixel areas is different.

The gap spacer is formed on one side of the first substrate close to the second substrate or one side of the second substrate close to the first substrate.

The black matrix further includes: and the second black matrix strips are vertically crossed with the first black matrix strips, and each second black matrix strip correspondingly shields one scanning line.

The second substrate further includes: and a common electrode disposed on the second substrate and the black matrix.

The pixel electrode layer further includes: each shading electrode strip correspondingly shades one scanning line, and the shading electrode strips have the same voltage as the common electrode.

The grid electrode of each driving TFT is electrically connected with the corresponding scanning line, the source electrode of each driving TFT is electrically connected with the corresponding data line, and the drain electrode of each driving TFT is electrically connected with the corresponding pixel electrode of each driving TFT.

The grid electrode and the scanning line of the driving TFT are both positioned on a first metal layer, and the source electrode, the drain electrode and the data line of the driving TFT are both positioned on a second metal layer which is insulated and overlapped with the first metal layer.

Each gap spacer is positioned at the vertical center line of a corresponding first black matrix strip.

The invention has the beneficial effects that: the invention provides a curved liquid crystal display panel, wherein each two adjacent rows of pixel areas in the curved liquid crystal display panel are a pixel group, two data lines corresponding to the two adjacent rows of pixel areas in the same pixel group are adjacent, and a gap spacer and a black matrix strip for shielding the area are arranged in the area where the data line and a driving TFT are positioned in each pixel group, so that the slidable range of the gap spacer in the horizontal direction relative to the black matrix strip can be effectively increased, the gap spacer is prevented from sliding out of the shielding range of the black matrix, and poor display is avoided.

Drawings

For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.

In the drawings, there is shown in the drawings,

fig. 1 is a structural diagram of a first substrate of a curved liquid crystal display panel with a conventional normal structure;

FIG. 2 is a schematic diagram showing the positions of a black matrix and a spacer of a curved liquid crystal display panel of a conventional normal structure;

FIG. 3 is a structural diagram of a first substrate of a curved liquid crystal display panel with a conventional triple gate driving structure;

FIG. 4 is a schematic diagram of the positions of a black matrix and a spacer of a curved liquid crystal display panel with a conventional tri-gate driving structure;

FIG. 5 is a cross-sectional view of a curved liquid crystal display panel according to the present invention;

FIG. 6 is a structural diagram of a first substrate of a curved liquid crystal display panel according to the present invention;

FIG. 7 is a schematic diagram of the positions of the black matrix and the gap spacers of the curved liquid crystal display panel according to the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Referring to fig. 5, in a first embodiment of the present invention, the present invention provides a curved liquid crystal display panel, which is driven by a triple-gate structure, including: a first substrate 1 and a second substrate 2 disposed opposite to each other.

Wherein the first substrate 1 includes: a first substrate 11, a TFT layer 12 disposed on a side of the first substrate 11 close to the second substrate 2, a color resist layer 13 disposed on the TFT layer 12 and the first substrate 11, and a pixel electrode layer 14 disposed on the color resist layer 13; the second substrate 2 includes: a second substrate base plate 21, a black matrix 22 provided on a side of the second substrate base plate 21 close to the first substrate 1, and a common electrode 23 provided on the second substrate base plate 21 and the black matrix 22.

A plurality of spacers 15 are disposed on the first substrate 1 on the side close to the second substrate 2, and specifically, a plurality of spacers 15 are disposed on the color resist layer 13.

Further, as shown in fig. 6, the TFT layer 12 includes: a plurality of scan lines 121, a plurality of data lines 122, and a plurality of driving TFTs 123; the pixel electrode layer 14 includes: a plurality of pixel electrodes 141 arranged in an array; the plurality of scanning lines 121 and the plurality of data lines 122 intersect to define a plurality of pixel regions 124 arranged in an array, at least one pixel electrode 141 and at least one driving TFT123 are disposed in each pixel region 124, and the driving TFT123 is located between the pixel electrode 141 in the pixel region 124 where the driving TFT123 is located and the data line 122 corresponding to the pixel region 124; each two adjacent columns of pixel regions 124 are a pixel group, and two data lines 122 corresponding to two columns of pixel regions 124 in the same pixel group are adjacently arranged.

In detail, the gate of each driving TFT123 is electrically connected to the corresponding scan line 121, the source is electrically connected to the corresponding data line 122, and the drain is electrically connected to the corresponding pixel electrode 141, so that the driving TFT123 is turned on by the scan line 121, and a pixel voltage is written to the pixel electrode 141 by the data line 122.

Specifically, in correspondence with the tri-gate architecture driving, the color resistance layer 13 includes: a plurality of color resist blocks 131 arranged in an array, each color resist block 131 corresponds to one pixel region 124, the color resist blocks 131 in the same row of pixel regions 124 have the same color, and the color resist blocks 131 in adjacent rows of pixel regions 124 have different colors, preferably, the plurality of color resist blocks 131 includes: the color resist blocks 131 corresponding to the pixel regions 124 in the same row are sequentially and repeatedly arranged from top to bottom according to the sequence of the red color resist blocks, the green color resist blocks and the blue color resist blocks, so that red sub-pixels, green sub-pixels and blue sub-pixels are correspondingly formed in the curved liquid crystal display panel, and a red sub-pixel, a green sub-pixel and a blue sub-pixel which are sequentially arranged in the same row form a complete display pixel.

Specifically, the gate electrode of the driving TFT123 and the scan line 121 are located in a first metal layer, and the source electrode and the drain electrode of the driving TFT123 and the data line 122 are located in a second metal layer overlapped with the first metal layer in an insulating manner. Preferably, the material of the first metal layer and the second metal layer may be one or a combination of molybdenum, copper, and aluminum, the material of the pixel electrode layer 141 may be a transparent conductive material such as Indium Tin Oxide (ITO), and the structure of the pixel electrode 141 may be a planar electrode or a patterned electrode having a zigzag pattern.

Further, as shown in fig. 7, the black matrix 22 includes: the liquid crystal display panel comprises a plurality of first black matrix strips 221 and a plurality of second black matrix strips 222, wherein the plurality of first black matrix strips 221 and the plurality of second black matrix strips 222 are vertically intersected, each first black matrix strip 221 correspondingly shields an area where a data line 122 and a driving TFT123 in a pixel group are located, and each second black matrix strip 222 correspondingly shields an area where a scanning line 121 is located, so that each pixel area 124 is separated, and light leakage is prevented.

The plurality of gap spacers 15 are located in the area where the data lines 122 and the driving TFTs 123 are located in each pixel group and correspond to the positions of the first black matrix strips 221, and preferably, each gap spacer 15 is located at the vertical center line of the corresponding first black matrix strip 221, so as to ensure that the gap spacers 15 and the first black matrix strips 221 have a sufficient relative sliding distance in the horizontal direction, and prevent the gap spacers 15 from exceeding the shielding area of the black matrix 22 when the curved liquid crystal display panel is bent, thereby causing poor display.

It should be noted that, in the present invention, each two adjacent columns of pixel regions 124 are divided into one pixel group, and the two data lines 122 corresponding to the two columns of pixel regions 124 in the same pixel group are adjacently disposed, so that the driving TFTs of the same pixel group are located in the same region, and the width of the first black matrix strip 221 is widened to shield the region, and the width of each first black matrix strip 221 in the horizontal direction is about twice as large as that of the prior art, which can effectively increase the slidable range of the gap spacer 15 in the horizontal direction relative to the first black matrix strip 221, prevent the gap spacer 15 from sliding out of the shielding range of the black matrix 22, and avoid poor display.

In addition, the present invention provides a second embodiment, which is different from the first embodiment in that, the black matrix 22 in the second embodiment includes only the plurality of first black matrix stripes 221, and the plurality of second black matrix stripes 222 are replaced by a plurality of transparent light-shielding electrode stripes in the pixel electrode layer 14, each light-shielding electrode stripe correspondingly shielding one scanning line 121, the light-shielding electrode stripes having a voltage equal to the common electrode 23, the light-shielding electrode stripes and the common electrode 23 can be used to control the liquid crystal in the light-shielding electrode stripe regions not to deflect, so as to prevent light from transmitting, achieve the same light-shielding effect as the black matrix, meanwhile, the liquid crystal display panel has an electric field shielding function, so that the interference of the electric field on the scanning lines 121 on the normal display of the liquid crystal display panel can be prevented, and the rest is the same as that in the first embodiment, and is not described herein again.

In addition, the present invention provides a third embodiment, which is different from the first embodiment in that the third embodiment adopts a non-COA conventional structure, the color resist layer 13 is formed on the second base substrate 21 on the side close to the first base substrate 1, and the black matrix 22 partitions the color resist layer 13 to prevent color mixing. That is, the present invention is applicable to both the COA structure and the curved liquid crystal display panel of the conventional structure, and can be specifically selected according to actual needs.

In addition, the present invention provides a fourth embodiment, which is different from the first embodiment in that it adopts a conventional structure other than the POA, and a gap spacer 15 thereof is formed on the side of the second substrate 2 close to the first substrate 1. That is, the invention can be applied to the curved liquid crystal display panel with the POA structure and the conventional structure, and can be specifically selected according to actual needs.

In summary, the present invention provides a curved liquid crystal display panel. Every two adjacent pixel areas in the curved-surface liquid crystal display panel are a pixel group, two data lines corresponding to the two pixel areas in the same pixel group are adjacent, and a gap spacer and a black matrix strip for shielding the area are arranged in the area where the data line and the driving TFT are located in each pixel group, so that the slidable range of the gap spacer in the horizontal direction relative to the black matrix strip can be effectively increased, the gap spacer is prevented from sliding out of the shielding range of the black matrix, and poor display is avoided.

As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.

Claims

1. A curved liquid crystal display panel, comprising: a first substrate (1) and a second substrate (2) which are arranged oppositely;

the first substrate (1) comprises: the liquid crystal display panel comprises a first substrate (11), a TFT layer (12) and a pixel electrode layer (14) which are arranged on one side, close to the second substrate (2), of the first substrate (11); the second substrate (2) comprises: a second substrate (21) and a black matrix (22) provided on the second substrate (21) on the side close to the first substrate (1);

the TFT layer (12) includes: a plurality of scanning lines (121), a plurality of data lines (122), and a plurality of driving TFTs (123); the pixel electrode layer (14) includes: a plurality of pixel electrodes (141) arranged in an array; the plurality of scanning lines (121) and the plurality of data lines (122) are intersected to define a plurality of pixel regions (124) which are arranged in an array mode, at least one pixel electrode (141) and at least one driving TFT (123) are arranged in each pixel region (124), and the driving TFT (123) is located between the pixel electrode (141) in the pixel region (124) where the driving TFT is located and the data line (122) corresponding to the pixel region (124);

every two adjacent columns of pixel regions (124) are a pixel group, and two data lines (122) corresponding to two columns of pixel regions (124) in the same pixel group are adjacently arranged; the black matrix (22) includes: a plurality of first black matrix strips (221), wherein each first black matrix strip (221) correspondingly shields the area where the data line (122) and the driving TFT (123) are located in one pixel group; a gap spacer (15) is arranged in the area where the data line (122) and the driving TFT (123) are positioned in each pixel group;

the grid electrode of each driving TFT (123) is electrically connected with the corresponding scanning line (121), the source electrode is electrically connected with the corresponding data line (122), and the drain electrode is electrically connected with the corresponding pixel electrode (141);

the curved liquid crystal display panel is driven by adopting a three-grid framework;

each gap spacer (15) is located at the vertical center line of a corresponding first black matrix strip (221).

2. The curved liquid crystal display panel of claim 1, further comprising: a color resist layer (13); the color resistance layer (13) is arranged between the TFT layer (12) and the pixel electrode layer (14) or arranged on one side, close to the first base plate (1), of the second substrate base plate (21).

3. The curved liquid crystal display panel of claim 2, wherein the color resist layer (13) comprises: the color filter comprises a plurality of color resistance blocks (131) arranged in an array, wherein each color resistance block (131) corresponds to one pixel region (124), the color of the color resistance blocks (131) in the same row of pixel regions (124) is the same, and the color of the color resistance blocks (131) in the adjacent row of pixel regions (124) is different.

4. The curved liquid crystal display panel according to claim 1, wherein the gap spacer (15) is formed on one side of the first substrate (1) adjacent to the second substrate (2) or one side of the second substrate (2) adjacent to the first substrate (1).

5. The curved liquid crystal display panel of claim 1, wherein the black matrix (22) further comprises: and a plurality of second black matrix strips (222) which are vertically crossed with the first black matrix strips (221), wherein each second black matrix strip (222) correspondingly shields one scanning line (121).

6. The curved liquid crystal display panel of claim 1, wherein the second substrate (2) further comprises: and a common electrode (23) provided on the second substrate (21) and the black matrix (22).

7. The curved liquid crystal display panel according to claim 6, wherein the pixel electrode layer (14) further comprises: and each light-shielding electrode strip correspondingly shields one scanning line (121), and has the same voltage as the common electrode (23).

8. The curved liquid crystal display panel of claim 1, wherein the gate electrode of the driving TFT (123) and the scan line (121) are located on a first metal layer, and the source electrode and the drain electrode of the driving TFT (123) and the data line (122) are located on a second metal layer overlapping with the first metal layer in an insulating manner.