CN101566756B - Curved LCD panel - Google Patents

Abstract

The invention provides an arc-shaped liquid crystal display panel, which comprises a first substrate, a second substrate, frame glue, a plurality of spacers and a liquid crystal layer, wherein the frame glue is arranged between the first substrate and the second substrate, the first substrate, the second substrate and the frame glue are bent into at least one arc-shaped structure, the spacers are arranged on the first substrate and distributed between the first substrate and the second substrate, and before the liquid crystal display panel is bent into the arc-shaped structure, the distance between the spacers close to the top end of the arc-shaped structure and the second substrate is smaller than the distance between the spacers far away from the top end of the arc-shaped structure and the second substrate. The liquid crystal layer is positioned between the first substrate and the second substrate, wherein the gap object and the liquid crystal layer are surrounded by the frame glue. The invention maintains the size of the liquid crystal space by regulating and controlling the space between the gap object and the opposite substrate.

Description

Curved LCD panel

technical field

The present invention relates to a cambered liquid crystal display panel (cambered liquid crystal display panel), and in particular to a curved photo-spacer with different distances or different distribution densities from the opposite substrate. LCD panel.

Background technique

Generally speaking, a liquid crystal display panel applied to a liquid crystal display is composed of an active matrix substrate, a color filter substrate, and a liquid crystal layer arranged between the two substrates, and the two substrates are usually adhered by a sealant to The liquid crystal is sealed between the two substrates. In order to maintain the liquid crystal gap (cell gap) between the two substrates, a photo-spacer is usually formed on the active array substrate or the color filter substrate, and then the active array substrate and the color filter substrate are assembled and injected into the liquid crystal. , to form a liquid crystal display panel. In order to ensure the display quality of the liquid crystal display, the maintenance of the liquid crystal spacing is a very important issue. If the uniformity of the liquid crystal spacing is not properly maintained, it will cause display unevenness (display mura).

In recent years, many curved liquid crystal display panels have been applied to electrical products with a curved appearance, and in the curved liquid crystal display panels, the change of the distance between liquid crystals is one of the focuses of attention.

FIG. 1 is a schematic cross-sectional view of a curved liquid crystal display panel in the prior art. Please refer to FIG. and the liquid crystal layer 130. Wherein, the liquid crystal spacing Gc closer to the arc top A is smaller than the liquid crystal spacing Gs away from the arc top A, so the liquid crystal molecules in the liquid crystal layer 130 will be pushed to the two sides away from the arc top A, resulting in uneven liquid crystal distribution. As a result, display unevenness occurs, thereby affecting the display quality of the liquid crystal panel. Therefore, how to overcome or improve the above-mentioned problems is a problem to be overcome urgently in the production technology of current curved liquid crystal display panels.

Contents of the invention

The purpose of the present invention is to provide a curved liquid crystal display panel, which maintains the size of the liquid crystal gap (cell gap) by adjusting the distance or distribution density between the spacer and the opposite substrate.

In order to achieve the above object, the present invention proposes a curved liquid crystal display panel, which includes a first substrate, a second substrate, a sealant, a plurality of spacers, and a liquid crystal layer; wherein the sealant is arranged on the first substrate and the second substrate between the first substrate, the second substrate and the sealant are bent into at least one cambered structure; the spacers are arranged on the first substrate and distributed between the first substrate and the second substrate, wherein Before the liquid crystal display panel is bent into an arc-shaped structure, the distance between the spacer close to the top part of the arc-shaped structure and the second substrate is smaller than the distance between the spacer and the second substrate far from the top part of the arc-shaped structure; the liquid crystal layer is located on the first substrate Between the second substrate and the spacer and the liquid crystal layer are surrounded by frame glue.

In an embodiment of the present invention, the above-mentioned first substrate has a first region corresponding to the top of the arc structure and at least one second region located on one side of the first region, and the spacers include a plurality of first Spacers and a plurality of second spacers, wherein the first spacers are arranged in the first area, and before the liquid crystal display panel is bent into an arc structure, the distance between each first spacer and the second substrate is G1; the second The spacers are arranged in the second area, and before the liquid crystal display panel is bent into an arc structure, the distance between each second spacer and the second substrate is G2, and G1<G2.

In an embodiment of the present invention, the above-mentioned first substrate further has at least one third region located on the other side of the first region, and the spacers further include a plurality of third spacers arranged in the third region, Before the liquid crystal display panel is bent into an arc structure, the distance between each third spacer and the second substrate is G3, and G1<G3.

The present invention also proposes a curved liquid crystal display panel, which includes a first substrate, a second substrate, a sealant, a plurality of spacers, and a liquid crystal layer; wherein the sealant is disposed between the first substrate and the second substrate, and The first substrate, the second substrate and the sealant are bent into at least one cambered structure; the spacers are arranged on the first substrate and distributed between the first substrate and the second substrate, wherein the cambered structure is close to the cambered structure. The distribution density of the spacers at the top part of the arc structure is greater than the distribution density of the spacers at the top part away from the arc-shaped structure; the liquid crystal layer is located between the first substrate and the second substrate, and the spacers and the liquid crystal layer are surrounded by the frame glue.

In an embodiment of the present invention, the above-mentioned first substrate has a first region corresponding to the top of the arc structure and at least one second region located on one side of the first region, and the spacers include a plurality of first Spacers and a plurality of second spacers, wherein the first spacers are arranged in the first area, and the distribution density of each first spacer is D1, the second spacers are arranged in the second area, and each second spacer The distribution density of matter is D2, and |D1/D2| is between 1.125 and 20.

In an embodiment of the present invention, the above-mentioned first substrate further has at least one third region located on the other side of the first region, and the spacers further include a plurality of third spacers arranged in the third region, The distribution density of each third spacer is D3, and D1>D3, and |D1/D3| is between 1.125 and 20.

Based on the above, the present invention adjusts the distance between the spacer and the opposite substrate by adjusting the distance between the spacer and the opposite substrate, and adjusts the distance between the spacer and the opposite substrate near the top of the arc to be smaller than the area farther from the top of the arc, so as to maintain the appearance of the curved liquid crystal display panel. LCD spacing. The present invention can also adjust the distribution density of the spacers near the arc-shaped top region to be higher than the distribution density of the spacers away from the arc-shaped top region by regulating the distribution density of the spacers, so as to maintain the liquid crystal spacing of the curved liquid crystal display panel .

Description of drawings

FIG. 1 is a schematic cross-sectional view of a curved liquid crystal display panel in the prior art.

FIG. 2A is a schematic cross-sectional view of a curved liquid crystal display panel according to an embodiment of the present invention.

Figure 2B is a perspective view of Figure 2A.

FIG. 2C is a schematic view of FIG. 2A after being bent.

FIG. 2D is a partially enlarged schematic view of FIG. 2A .

FIG. 2E is a schematic diagram of FIG. 2D after being bent.

FIG. 2F and FIG. 2G are respectively enlarged schematic cross-sectional views of a curved display panel according to an embodiment of the present invention.

FIG. 2H to FIG. 2J are respectively enlarged schematic diagrams of a curved liquid crystal display panel according to an embodiment of the present invention after bending.

FIG. 3 is a top view of a curved liquid crystal display panel according to another embodiment of the present invention.

Explanation of reference signs:

100...curved liquid crystal display panel

110...the first substrate

120...Second substrate

130...LCD layer

Gc, Gs...LCD spacing

200, 300...Curved LCD panel

210...the first substrate

210a...the first long side

210b...the first short side

220...Second substrate

220a...the second long side

220b...the second short side

230......Frame glue

240, 340... Interstitial objects

240a, 340a...the first spacer

240b, 340b... the second spacer

240c, 340c...the third spacer

250...LCD layer

A...top

B1, B2, B3...Protrusions

C1, C2, C3...Protrusions

G1, G2, G3... spacing

H1, H2, H3...Height

D1, D2, D3... distribution density

S1...the first area

S2...Second area

S3...the third area

C...Centerline

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

FIG. 2A is a schematic cross-sectional view of a curved liquid crystal display panel according to an embodiment of the present invention. Figure 2B is a perspective view of Figure 2A. FIG. 2C is a schematic view of FIG. 2A after being bent. Please refer to FIG. 2A , FIG. 2B , and FIG. 2D first. The curved liquid crystal display panel 200 includes a first substrate 210 , a second substrate 220 , a sealant 230 , a plurality of spacers 240 and a liquid crystal layer 250 . In detail, one or more layers of thin film deposits, such as insulating layers, protrusions, metal layers or alignment layers, can be disposed on the first substrate 210 and the second substrate 220 respectively, but are not limited thereto. For example, the first substrate 210 of this embodiment is a transistor array substrate, which includes a glass substrate, a transistor array layer, a flat layer, a shared electrode layer, protrusions and/or an alignment layer. The second substrate 220 is a color filter substrate, which includes a glass substrate, a color filter layer, a protection layer, protrusions and/or an alignment layer, and the like. In other embodiments, the first substrate 210 is a color filter substrate, and the second substrate 220 is a transistor array substrate.

Of course, the present invention does not specifically limit the types of the first substrate 210 and the second substrate 220 . For example, the first substrate 210 may also be a color filter substrate (Array on Color Filter substrate, AOC substrate) integrated with a transistor array, or a transistor array substrate (Color Filter on Array substrate, AOC substrate) integrated with a color filter layer. COA substrate). In addition, the present invention does not limit the material of the first substrate 210 and the second substrate 220, for example, the material of the substrate can be glass, quartz, polyester, polycarbonate or other suitable materials .

As mentioned above, in the curved liquid crystal display panel 200, the sealant 230 is arranged between the first substrate 210 and the second substrate 220, wherein the first substrate 210, the second substrate 220 and the sealant 230 are bent into at least one Arc-shaped structure, as shown in Figure 2B. In addition, the first substrate 210 of this embodiment has a pair of first long sides 210a and a pair of first short sides 210b, and the second substrate 220 also has a pair of second long sides 220a and a pair of second short sides 220b. In particular, the first long side 210a is arranged relative to the second long side 220a, and the first short side 210b is arranged relative to the second short side 220b, as shown in FIG. 2A.

After the curved liquid crystal display panel 200 is bent, the first long side 210a and the second long side 220a are curved, and the first short side 210b and the second short side 220b are straight, as shown in FIG. 2C . That is, the first substrate 210 and the second substrate 220 are bent along the lengthwise direction. In other possible embodiments, after the curved liquid crystal display panel 200 is bent, the first long side 210 a and the second long side 220 a are linear, and the first short side 210 b and the second short side 220 b are curved. That is, the first substrate 210 and the second substrate 220 are bent along the short side direction.

In this embodiment, when the first substrate 210 , the second substrate 220 and the sealant 230 are bent into an arc structure, the top A of the arc structure is located on the center line C of the panel. That is, the top A of the arc-shaped structure after bending is located in the very center of the structure.

FIG. 2D is a partially enlarged schematic view of FIG. 2A . FIG. 2E is a schematic view of FIG. 2D after being bent. Referring to FIG. 2D , following the above, the spacers 240 are disposed on the first substrate 210 and distributed between the first substrate 210 and the second substrate 220 . It should be noted that, in this embodiment, the first substrate 210 is located under the second substrate 220 , and the spacers 240 on the first substrate 210 extend from bottom to top. In other possible embodiments, the first substrate 210 may be located on the second substrate 220 , and the spacers 240 on the first substrate 210 extend from top to bottom.

Based on the above, the distance G1 between the part of the spacers 240a closer to the top A of the arc-shaped structure and the second substrate 220 is smaller, and the distance G1 between the parts of the spacers 240b, 240c farther from the top A of the arc-shaped structure and the second substrate 220 is smaller. The distances G2 and G3 are relatively large, as shown in FIG. 2D.

When the curved liquid crystal display panel 200 is bent, since the distance G1 between the part of the spacer 240a close to the top A of the curved structure and the second substrate 220 is small, it can first resist the liquid crystal in the area near the top A of the curved structure. The pitch is changed to keep the liquid crystal pitch of the curved liquid crystal display panel 200 consistent, as shown in FIG. 2E . It is emphasized again that the distance G1 between the first spacer 240 a and the second substrate 220 refers to the liquid crystal distance, that is, the space between the spacer 240 a and the second substrate 220 that can accommodate liquid crystal molecules. In addition, it is worth mentioning that these spacers 240 with different heights are fabricated by a half-tone mask process, for example.

In this embodiment, the first substrate 210 has a first region S1 corresponding to the top A of the arc structure and one or more second regions S2 located on one side of the first region S1, and the spacer 240 includes a plurality of The first spacer 240a and a plurality of second spacers 240b. The first spacers 240a are disposed in the first region S1, and the distance between each first spacer 240a and the second substrate 220 is G1. The second spacers 240b are disposed in the second region S2, and the distance between each second spacer 240b and the second substrate 220 is G2, and G1<G2. It is emphasized again that the distances G1 and G2 between the first spacer 240a, the second spacer 240b and the second substrate 220 refer to the liquid crystal distance, that is, the distance between the first spacer 240a, the second spacer 240b and the second substrate 220 can be The space for accommodating liquid crystal molecules.

In this embodiment, 0.2 μm≤|G1-G2|≤2.5 μm is preferred. It should be noted that the width of the first region S1 can vary depending on the requirements of actual products.

In this embodiment, the first substrate 210 further has one or more third regions S3 located on the other side of the first region S1, and the spacer 240 further includes a plurality of third regions S3 arranged in the third region S3. Spacers 240c. The distance between each third spacer 240c and the second substrate 220 is G3, and G1<G3. Here, the distances G1, G2 and G3 between the first spacer 240a, the second spacer 240b, the third spacer 240c and the second substrate 220 refer to the liquid crystal spacing, that is, the first spacer 240a, the second spacer 240b, The liquid crystal molecules can be accommodated between the third spacer 240c and the second substrate 220 .

In addition, in this embodiment, 0.2 μm≤|G1-G3|≤2.5 μm is preferred. It is worth mentioning that the distance G3 between the third spacer 240 c and the second substrate 220 may be equal to or not equal to the distance G2 between the second spacer 240 b and the second substrate 220 . When G3 is equal to G2, as shown in FIG. 2D , the second area S2 and the third area S3 located on both sides of the first area S1 present a symmetrical distribution. When G3 is not equal to G2, the second area S2 and the third area S3 located on both sides of the first area S1 are distributed asymmetrically.

It should be emphasized again that the distances G1, G2 and G3 between the first spacer 240a, the second spacer 240b and the third spacer 240c and the second substrate 220 can be determined by: the first spacer 240a, the second spacer 240b and the height of the third spacer 240c itself and/or the height of the first substrate 210 itself and the film or protrusions deposited thereon and/or the height of the second substrate 220 itself and the film or protrusions deposited thereon .

In this embodiment, the distances G1, G2 and G3 between the first spacer 240a, the second spacer 240b and the third spacer 240c and the second substrate 220 are determined by the first spacer 240a, the second spacer 240b and the second spacer 240c. The three spacers 240c are contributed by their own heights H1 , H2 and H3 , as shown in FIG. 2D . In detail, the height of each first spacer 240a is H1, and the height of each second spacer 240b is H2, and H1>H2. In this embodiment, 0.2 μm≤|H1−H2|≤2.5 μm is preferred. In addition, in this embodiment, the height of each third spacer 240c is H3, and H1>H3. In this embodiment, 0.2 μm≤|H1-H3|≤2.5 μm is preferred.

In addition, the heights of the first spacer 240 a , the second spacer 240 b and the third spacer 240 c may also be formed by stacking different layers and/or protrusions on the first substrate 210 together. In more detail, the different film layers and/or protrusions on the first substrate 210 may be located under the first spacer 240a, the second spacer 240b, and the third spacer 240c, or may be located in the first gap The top of the spacer 240a, the second spacer 240b and the third spacer 240c, or the top and bottom of the first spacer 240a, the second spacer 240b and the third spacer 240c at the same time.

It is worth mentioning that when the number of the second regions S2 is greater than two, the height H2 of the second spacer 240 b is higher in the second region S2 closer to the first region S1 . Conversely, in the second region S2 farther away from the first region S1, the height H2 of the second spacer 240b is lower. Similarly, when the number of the third regions S3 is multiple, the height H3 of the third spacers 240c in the third regions S3 closer to the first region S1 is higher. Conversely, in the third region S3 farther away from the first region S1, the height H3 of the third spacer 240c is lower.

FIG. 2F and FIG. 2G are respectively enlarged schematic cross-sectional views of a curved display panel according to an embodiment of the present invention. Please refer to FIG. 2F , the curved display panel in this embodiment is similar to that in FIG. 2D , the main difference between the two is that the height relationship between the first spacer 240a, the second spacer 240b and the third spacer 240c is: H1 > H2=H3, and the distances G1, G2, and G3 between the first spacer 240a, the second spacer 240b, and the third spacer 240c and the second substrate 220 are determined by the first substrate 210 itself and the protrusions C1, C2 on it. And contributed by the height of C3, and G1<G2=G3, as shown in FIG. 2F.

Please refer to FIG. 2G, the curved display panel in this embodiment is similar to that in FIG. 2D, the main difference between the two is: the height relationship between the first spacer 240a, the second spacer 240b and the third spacer 240c is: H1 =H2=H3, and the distances G1, G2, and G3 between the first spacer 240a, the second spacer 240b, and the third spacer 240c and the second substrate 220 are determined by the second substrate 220 itself and the protrusions B1, B2 on it. and contributed by the height of B3, and G1<G2=G3, as shown in FIG. 2G .

As mentioned above, in FIG. 2F and FIG. 2G , the liquid crystal layer 250 is also located between the first substrate 210 and the second substrate 220 , and the spacer 240 and the liquid crystal layer 250 are also surrounded by the sealant 230 . It is worth mentioning that the distance between the liquid crystals between the first substrate 210 and the second substrate 220 is between 2 microns and 6 microns, preferably between 3 microns and 5 microns. It is emphasized again that the liquid crystal pitch mentioned here refers to the thickness of the space between the first substrate 210 and the second substrate 220 that can accommodate the liquid crystal layer.

FIG. 2H to FIG. 2J are respectively enlarged schematic diagrams of a curved liquid crystal display panel according to an embodiment of the present invention after bending. It should be noted that after the first substrate 210 , the second substrate 220 , and the sealant 230 are bent, the top A of the arc-shaped structure does not have to be located on the centerline C of the panel, but can be located on any side of the centerline C. That is, the top A of the arc-shaped structure after bending is located on the right side of the structure, as shown in FIG. 2H . Alternatively, the top A of the arc-shaped structure after bending is located on the left side of the structure, as shown in FIG. 2I. In addition, there may not be only one top A of the curved back arc structure. Specifically, the aforementioned first substrate 210 , second substrate 220 and sealant 230 may also be bent into more than two arc-shaped structures, as shown in FIG. 2J .

FIG. 3 is a top view of a curved liquid crystal display panel according to another embodiment of the present invention. Please refer to FIG. 3 and FIG. 2D. The curved liquid crystal display panel 300 of this embodiment is similar to the curved liquid crystal display panel 200. The main difference between the two is that in the curved liquid crystal display panel 300 of this embodiment, the The distribution density of the spacers 340 at the top A of the arc-shaped structure is higher, while the distribution density of the spacers 340 at the part farther from the top A of the arc-shaped structure is smaller. Specifically, in this embodiment, the distribution density of the plurality of first spacers 340a located in the first region S1 is D1, the distribution density of the second spacers 340b disposed in the second region S2 is D2, and | D1/D2| is between 1.125 and 20, and |D1/D2| is preferably between 4 and 12.

It is worth mentioning that when there are multiple second regions S2, the distribution density D2 of the second spacers 340b in the second region S2 closer to the first region S1 is larger; In the second region S2 of the region S1, the distribution density D2 of the second spacers 340b is relatively small.

In this embodiment, the distribution density of the plurality of third spacers 340c disposed in the third area S3 is D3, and D1>D3. In addition, |D1/D3| is between 1.125 and 20, wherein |D1/D3| is preferably between 4 and 12. When there are multiple third regions S3, the third region S3 closer to the first region S1 has a higher distribution density D3 of the third spacers 340c; on the contrary, the third region farther away from the first region S1 In S3, the distribution density D3 of the third spacers 340c is relatively small.

When the curved liquid crystal display panel 300 is bent into at least one curved structure, due to the higher density of the spacers 340 near the top A of the curved structure, it can firstly resist the change of the liquid crystal spacing in the area near the top A of the curved structure. , and further maintain the liquid crystal spacing of the curved liquid crystal display panel 300 to be consistent.

To sum up, the present invention adjusts the distance between the spacers near the top of the arc-shaped structure and the opposite substrate by adjusting the distance or distribution density between the spacers and the opposing substrate than the area farther away from the arc-shaped top. Small, or the distribution density is adjusted to be higher than the area away from the top of the arc, so as to maintain the liquid crystal spacing of the arc liquid crystal display panel. In addition, the present invention does not limit the bending pattern and the number of tops of the curved structure, so the curved liquid crystal display panel of the present invention can be more easily applied to terminal application products of different shapes.

The above descriptions are only illustrative specific implementations of the present invention, and are not intended to limit the scope of the present invention.

Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the protection scope of the present invention.

Claims (16)

1. arc liquid crystal display board, it is characterized in that: described arc liquid crystal display board comprises:

One first substrate;

One second substrate;

One frame glue is disposed between this first substrate and this second substrate, and wherein this first substrate, this second substrate and this frame glue are bent at least one arcuate structure;

A plurality of separation materials, be disposed on this first substrate, and be distributed between this first substrate and this second substrate, wherein before display panels bends to arcuate structure, less with the spacing of this second substrate near those separation materials of the head portion of this arcuate structure, and than bigger away from the spacing of those separation materials of the head portion of this arcuate structure and this second substrate; And

One liquid crystal layer, between this first substrate and this second substrate, wherein this separation material and this liquid crystal layer by this frame glue institute around.

2. arc liquid crystal display board according to claim 1 is characterized in that: this first substrate has a pair of first long limit and a pair of first minor face, and this second substrate has a pair of second long limit and a pair of second minor face.

3. arc liquid crystal display board according to claim 2 is characterized in that: this is to the first long limit and should be arc to the second long limit, and should and should be linear to second minor face to first minor face.

4. arc liquid crystal display board according to claim 2 is characterized in that: this is to the first long limit and should be linear to the second long limit, and should and should be arc to second minor face to first minor face.

5. arc liquid crystal display board according to claim 1 is characterized in that: this first substrate has a first area and an at least one second area that is positioned at a side of this first area corresponding to this top of this arcuate structure, and those separation materials comprise:

A plurality of first separation materials are disposed in this first area, and before display panels bent to arcuate structure, respectively the spacing of this first separation material and this second substrate was G1; And

A plurality of second separation materials be disposed in this second area, and before display panels bent to arcuate structure, respectively the spacing of this second separation material and this second substrate were G2, and G1＜G2.

6. arc liquid crystal display board according to claim 5 is characterized in that: 0.2 micron≤| G1-G2|≤2.5 micron.

7. arc liquid crystal display board according to claim 5 is characterized in that: respectively the height of this first separation material is H1, and respectively the height of this second separation material is H2, and H1＞H2.

8. arc liquid crystal display board according to claim 7 is characterized in that: 0.2 micron≤| H1-H2|≤2.5 micron.

9. arc liquid crystal display board according to claim 5, it is characterized in that: respectively the height of this first separation material is identical with the height of this second separation material respectively, and this second substrate has a plurality of first protrusion and a plurality of second protrusions that are positioned at those second separation material tops that are positioned at those first separation material tops, and the height of those first protrusions is higher than the height of those second protrusions.

10. arc liquid crystal display board according to claim 5, it is characterized in that: this first substrate also has at least one the 3rd zone that is positioned at the opposite side of this first area, and those separation materials also comprise a plurality of third space things that are disposed in the 3rd zone, and before display panels bends to arcuate structure, respectively the spacing of this third space thing and this second substrate is G3, and G1＜G3.

11. arc liquid crystal display board according to claim 10 is characterized in that: 0.2 micron≤| G1-G3|≤2.5 micron.

12. arc liquid crystal display board according to claim 10 is characterized in that: respectively the height of this first separation material is H1, and respectively the height of this third space thing is H3, and H1＞H3.

13. arc liquid crystal display board according to claim 12 is characterized in that: 0.2 micron≤| H1-H3|≤2.5 micron.

14. arc liquid crystal display board according to claim 1 is characterized in that: the spacing between this first substrate and this second substrate is between 2 microns to 6 microns.

15. arc liquid crystal display board according to claim 1 is characterized in that: the spacing between this first substrate and this second substrate is between 3 microns to 5 microns.

16. arc liquid crystal display board according to claim 1 is characterized in that: this first substrate is a colored optical filtering substrates, and this second substrate is a transistor (TFT) array substrate.

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