TW202212934A - Display panel - Google Patents

Abstract

A display panel includes a first substrate, pixel structures, a second substrate, a display medium, a first sealant, at least one filter pattern and a second sealant. The first substrate has an active area and a peripheral area outside the active area. The pixel structures are disposed on the active area of the first substrate. The second substrate is disposed opposite to the first substrate. The first sealant is disposed between the first substrate and the second substrate, and is located on the peripheral area of the first substrate. The peripheral area of the first substrate has a protruding portion that extends beyond the second substrate, and the at least one filter pattern is disposed between the protruding portion of the first substrate and the second substrate. The second sealant is disposed on a side wall of the first substrate and a side wall of the second substrate.

Description

display panel

The present invention relates to a display panel.

With the development of display technology, people's demands for display devices are no longer satisfied with optical characteristics such as high resolution, high contrast, and wide viewing angle. People also expect display devices to have an elegant appearance. For example, display devices are expected to have narrow bezels.

In general, a display device may include a non-self-emissive display panel and a backlight module below the non-self-emissive display panel. In order to realize a display device with a narrow frame and prevent the light beam emitted by the backlight module from leaking from the peripheral area of the non-self-emissive display panel, a light-blocking side sealant is formed on the sidewall of the non-self-emissive display panel. However, when the upper and lower substrates of the non-self-emissive display panel are dislocated, the bonding between the side sealant and the sidewall of the non-self-emissive display panel is not good, resulting in side point-like light leakage.

The present invention provides a display panel with good performance.

The display panel of the present invention includes a first substrate, a plurality of pixel structures, a second substrate, a display medium, a first sealant, at least one filter pattern and a second sealant. The first substrate has an active area and a peripheral area outside the active area. A plurality of pixel structures are disposed on the active area of the first substrate. The second base is arranged opposite to the first base. The first sealant is disposed between the first substrate and the second substrate, and is located on the peripheral area of the first substrate. The peripheral region of the first substrate has a protruding portion beyond the second substrate, and at least one filter pattern is disposed between the protruding portion of the first substrate and the second substrate. The second sealant is disposed on the sidewall of the first substrate and the sidewall of the second substrate.

In an embodiment of the present invention, the above-mentioned second encapsulant is further disposed on at least one sidewall of at least one filter pattern.

In an embodiment of the present invention, the sidewall of the second substrate is overlapped with at least one filter pattern.

In an embodiment of the present invention, the above-mentioned display panel further includes a light-shielding pattern layer disposed on the second substrate and located between the second substrate and the display medium. At least one filter pattern overlaps with the sidewall of the light shielding pattern layer located above the peripheral region.

In an embodiment of the present invention, the above-mentioned display panel further includes a polarizer disposed on the second substrate. The second substrate is located between the polarizer and the at least one filter pattern, and part of the second sealant is disposed between the polarizer and the at least one filter pattern.

In an embodiment of the present invention, the above-mentioned at least one filter pattern and the plurality of pixel structures are disposed on the same first substrate.

In an embodiment of the present invention, each pixel structure described above includes an active element and a pixel electrode electrically connected to the active element. The display panel further includes a plurality of color resistors, respectively overlapping the plurality of pixel electrodes of the plurality of pixel structures. The material of the at least one filter pattern is the same as the material of the at least one color resist.

In an embodiment of the present invention, the above-mentioned at least one filter pattern includes a plurality of stacked filter patterns, and the colors of the plurality of filter patterns are different from each other.

In an embodiment of the present invention, the above-mentioned display panel further includes a protective layer. A plurality of filter patterns, protective layers and part of the second sealant are sequentially stacked on the protruding portion of the first substrate.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used in the drawings and description to refer to the same or like parts.

It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to a physical and/or electrical connection. Furthermore, "electrically connected" or "coupled" may refer to the existence of other elements between the two elements.

As used herein, "about," "approximately," or "substantially" includes the stated value and the average within an acceptable deviation from the particular value as determined by one of ordinary skill in the art, given the measurement in question and the A specific amount of measurement-related error (ie, the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about", "approximately" or "substantially" may be used to select a more acceptable range of deviation or standard deviation depending on optical properties, etching properties or other properties, and not one standard deviation may apply to all properties. .

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be construed as having meanings consistent with their meanings in the context of the related art and the present invention, and are not to be construed as idealized or excessive Formal meaning, unless expressly defined as such herein.

FIG. 1 is a schematic cross-sectional view of a display panel 10 according to an embodiment of the present invention.

Referring to FIG. 1 , the display panel 10 includes a pixel array substrate 1 , an opposite substrate 2 and a display medium 3 . The pixel array substrate 1 has a first base 110 , the opposite substrate 2 has a second base 210 , the second base 210 is disposed opposite to the first base 110 , and the display medium 3 is disposed on the first base 110 and the second base 210 between.

For example, in this embodiment, the display medium 3 may be a non-self-luminous material (such as, but not limited to, liquid crystal), and the display panel 10 may further include an area between the outer surface 112 of the first substrate 110 and the second substrate 210 , respectively. The polarizer 4 and the polarizer 5 on the outer surface 212 are provided with a backlight module (not shown) below the display panel 10 .

In this embodiment, the material of the first substrate 110 may be glass, quartz, organic polymer, or other applicable materials; the material of the second substrate 210 may be glass, quartz, organic polymer, or other suitable materials applicable material.

The pixel array substrate 1 includes a first substrate 110 and a plurality of pixel structures SPX. The first substrate 110 has an active area 110a and a peripheral area 110b outside the active area 110a. A plurality of pixel structures SPX are disposed in the active region 110 a of the first substrate 110 .

Each pixel structure SPX includes an active element T and a pixel electrode 120 electrically connected to the active element T. In this embodiment, the active element T may include a thin film transistor T, and the thin film transistor has a control terminal Tc, a semiconductor pattern Td, and a first terminal Ta and a second terminal Tb electrically connected to two different regions of the semiconductor pattern Td, respectively. , wherein the control terminal Tc of the thin film transistor is electrically connected to a corresponding scan line (not shown), the first terminal Ta of the thin film transistor is electrically connected to a corresponding data line (not shown), and the thin film transistor The second end Tb of the crystal is electrically connected to a corresponding one of the pixel electrodes 120 .

In this embodiment, the display panel 10 may further selectively include a plurality of color resists 131R, 131G, and 131B, respectively overlapping the plurality of pixel electrodes 120 of the plurality of pixel structures SPX. For example, in this embodiment, a plurality of color resists 131R, 131G, and 131B can be selectively disposed on the same first substrate 110 with the active elements T and pixel electrodes 120 of a plurality of pixel structures SPX, thereby forming A color filter on array (COA) structure. However, the present invention is not limited thereto, and in other embodiments, a plurality of color resists 131R, 131G, 131B may also be selectively disposed on the second substrate 210 . For example, in this embodiment, the plurality of color resists 131R, 131G, and 131B of the display panel 10 may include red color resists, green color resists, and blue color resists, but the invention is not limited thereto.

In addition, in this embodiment, the pixel array substrate 1 may also selectively include a protective layer 140 disposed on the plurality of color resists 131R, 131G, and 131B. For example, in the present embodiment, the material of the protective layer 140 may be an organic material, an inorganic material (eg, silicon oxide, silicon nitride, silicon oxynitride, or a stacked layer of at least two of the above-mentioned materials), or any of the above-mentioned materials. combination.

The display panel 10 further includes a first encapsulant 6 disposed between the first base 110 of the pixel array substrate 1 and the second base 210 of the opposite substrate 2 and located on the peripheral region 110 b of the first base 110 . The region of the first substrate 110 surrounded by the first sealant 6 is the active region 110a. The area of the first substrate 110 occupied by the first sealant 6 and located at the periphery of the first sealant 6 is the peripheral area 110b.

It should be noted that the display panel 10 further includes at least one filter pattern 132R, 132B, the peripheral region 110b of the first substrate 110 has a protruding portion 110b-1 beyond the second substrate 210, at least one filter pattern 132R, 132B is disposed between the protruding portion 110b - 1 of the first base 110 and the second base 210 .

In this embodiment, the sidewalls 214 of the second substrate 210 overlap with at least one filter pattern 132R, 132B. That is, the vertical projection of the sidewall 214 of the second base 210 on the first substrate 110 overlaps with the vertical projection of the at least one filter pattern 132R, 132B on the first substrate 110 .

In this embodiment, at least one filter pattern 132R, 132B and a plurality of pixel structures SPX can be selectively disposed on the same first substrate 110, but the invention is not limited to this.

More specifically, in this embodiment, at least one filter pattern 132R, 132B located in the peripheral region 110b can be selectively formed together with at least one color resist 131R, 131B located in the active region 110a, and at least one filter pattern 132R The material of 132B and the material of at least one color resistor 131R and 131B can be the same.

For example, in this embodiment, at least one filter pattern 132R, 132B may include a plurality of filter patterns 132R, 132B stacked on each other, and the colors of the multiple filter patterns 132R, 132B are different from each other; the filter pattern 132R The color resist 131R located in the active region 110a can be formed in the same process, and the filter pattern 132R and the color resist 131R located in the active region 110a have the same material and color; the filter pattern 132B located in the peripheral region 110b and the color resist 131R located in the active region The color resist 131B of 110a can be formed in the same process, and the filter pattern 132B and the color resist 131B located in the active region 110a have the same material and color.

In this embodiment, the color of the filter pattern 132R and the color of the filter pattern 132B are, for example, red and blue. However, the present invention is not limited thereto, and in other embodiments, the colors of the filter pattern 132R and the filter pattern 132B may also be other color combinations. For example, in one embodiment, the colors of the filter patterns 132R and 132B may be red and green; in another embodiment, the colors of the filter patterns 132R and 132B may be green and blue color.

In addition, in this embodiment, the number of the at least one filter pattern 132R, 132B disposed in the peripheral region 110b is not limited to the two shown in FIG. 1 . In one embodiment, the number of the at least one filter pattern 132R, 132B disposed in the peripheral region 110b may also be one, three or more than three. For example, in another embodiment not shown, the at least one filter pattern disposed in the peripheral region 110b may include a stacked filter pattern 132R, a filter pattern 132B and another filter pattern (not shown) ), the filter pattern 132R, the filter pattern 132B and the other filter pattern can be formed together with the color resist 131R, the color resist 131G and the color resist 131B located in the active region 110a, respectively; The colors of the light pattern 132B and the other filter pattern may be red, green and blue.

The display panel 10 further includes a light shielding pattern layer 220 . In this embodiment, the light-shielding pattern layer 220 can be selectively disposed on the second substrate 210 and located between the second substrate 210 and the display medium 3 . The light-shielding pattern layer 220 has a plurality of openings 222 respectively overlapping the plurality of pixel electrodes 120 of the plurality of pixel structures SPX. The light-shielding pattern layer 220 is commonly known as a black matrix (BM).

In this embodiment, the light shielding pattern layer 220 has sidewalls 224 located above the peripheral region 110b of the first substrate 110, and at least one filter pattern 132R, 132B overlaps with the sidewalls 224 of the light shielding pattern layer 220 located above the peripheral region 110b. That is, the vertical projection of the outer contour of the light-shielding pattern layer 220 defined by the sidewalls 224 on the first substrate 110 overlaps with the vertical projection of the at least one filter pattern 132R, 132B on the first substrate 110 .

The display panel 10 further includes a second sealant 7 . The second sealant 7 is disposed on the sidewall 114 of the first substrate 110 and the sidewall 214 of the second substrate 210 to block the light beam emitted by the backlight module (not shown) from leaking from the peripheral region 110b.

In this embodiment, the second sealant 7 is further disposed on at least one sidewall 132Rs and 132Bs of at least one filter pattern 132R and 132B, the sidewall 144 of the protective layer 140 and the sidewall 224 of the light shielding pattern layer 220 .

In this embodiment, the filter pattern 132R, the filter pattern 132B and part of the protective layer 140 are sequentially stacked on the protruding portion 110b-1 of the first substrate 110; the filter pattern 132R, the filter pattern 132B and the A portion of the protective layer 140 on the stacked structure of the filter pattern 132R and the filter pattern 132B can form a retaining wall structure B; the retaining wall structure B can prevent the second encapsulant 7 from excessively infiltrating between the pixel array substrate 1 and the opposite substrate 2 the gap g.

In this embodiment, the second substrate 210 is located between the polarizer 5 and the at least one filter pattern 132R, 132B, and part of the second sealant 7 is disposed between the polarizer 5 and the at least one filter pattern 132R, 132B . More specifically, in this embodiment, the polarizer 5 has a protruding portion 5-1 beyond the second substrate 210, the protruding portion 5-1 of the polarizer 5, the sidewall 214 of the second substrate 210, the light shielding A space G is defined by the sidewall 224 of the pattern layer 220 and the retaining wall structure B, and a portion of the second sealant 7 fills the space G.

It is worth mentioning that the at least one filter pattern 132R, 132B disposed between the protruding portion 110b-1 of the first substrate 110 and the second substrate 210 can block the backlight module (not shown) disposed under the display panel 10. shown) to prevent the light beam from leaking from above the protruding portion 110 b - 1 of the first substrate 110 and/or the junction of the second substrate 210 and the second sealing compound 7 . Thereby, the phenomenon of point-like light leakage at the side of the display panel 10 can be improved.

1: Pixel array substrate 2: Opposite substrate 3: Display medium 4, 5: polarizer 5-1, 110b-1: Projection 6: The first sealant 7: The second sealant 10: Display panel 110: The first base 110a: Active Zone 110b: Surrounding area 112, 212: outer surface 114, 132Rs, 132Bs, 144, 214, 224: Sidewalls 120: pixel electrode 131R, 131G, 131B: color resistance 132R, 132B: filter pattern 140: protective layer 210: Second base 220: shading pattern layer 222: Opening B: Retaining Wall Structure G: space g: gap SPX: pixel structure T: Active element Ta: the first end Tb: second end Tc: control terminal Td: Semiconductor pattern

FIG. 1 is a schematic cross-sectional view of a display panel 10 according to an embodiment of the present invention.

1: Pixel array substrate

2: Opposite substrate

3: Display medium

4, 5: polarizer

5-1, 110b-1: Projection

6: The first sealant

7: The second sealant

10: Display panel

110: The first base

110a: Active Zone

110b: Surrounding area

112, 212: outer surface

114, 132Rs, 132Bs, 144, 214, 224: Sidewalls

120: pixel electrode

131R, 131G, 131B: color resistance

132R, 132B: filter pattern

140: protective layer

210: Second base

220: shading pattern layer

222: Opening

B: Retaining Wall Structure

G: space

g: gap

SPX: pixel structure

T: Active element

Ta: the first end

Tb: second end

Tc: control terminal

Td: Semiconductor pattern

Claims (9)

A display panel, comprising: a first substrate having an active area and a peripheral area outside the active area; a plurality of pixel structures disposed on the active region of the first substrate; a second substrate, disposed opposite to the first substrate; a display medium disposed between the first substrate and the second substrate; a first sealant, disposed between the first substrate and the second substrate, and located on the peripheral region of the first substrate; At least one filter pattern, wherein the peripheral region of the first substrate has a protruding portion beyond the second substrate, and the at least one filter pattern is disposed on the protruding portion of the first substrate and the first substrate between two substrates; and A second sealant is disposed on a sidewall of the first substrate and a sidewall of the second substrate. The display panel of claim 1, wherein the second sealant is further disposed on at least one sidewall of the at least one filter pattern. The display panel of claim 1, wherein the sidewall of the second substrate overlaps the at least one filter pattern. The display panel according to claim 1, further comprising: A light-shielding pattern layer is disposed on the second substrate and located between the second substrate and the display medium, wherein the at least one filter pattern overlaps with a sidewall of the light-shielding pattern layer above the peripheral region. The display panel according to claim 1, further comprising: a polarizer disposed on the second substrate, wherein the second substrate is located between the polarizer and the at least one filter pattern, and a part of the second sealant is disposed on the polarizer and the at least one filter pattern between patterns. The display panel of claim 1, wherein the at least one filter pattern and the pixel structures are disposed on the same first substrate. The display panel of claim 1, wherein each pixel structure includes an active element and a pixel electrode electrically connected to the active element, and the display panel further includes: A plurality of color resistors are respectively overlapped with a plurality of pixel electrodes of the pixel structures, wherein the material of the at least one filter pattern is the same as the material of the at least one color resistor. The display panel of claim 1, wherein the at least one filter pattern comprises a plurality of filter patterns stacked on top of each other, and the colors of the filter patterns are different from each other. The display panel according to claim 8, further comprising: A protective layer, wherein the filter patterns, the protective layer and part of the second sealant are sequentially stacked on the protruding portion of the first substrate.

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