Display device

Abstract

A display device includes a plurality of first pixels and a plurality of second pixels. Each first pixel includes first to third subpixel columns. The first subpixel column includes three middle first color subpixels. The second subpixel column includes two short second color subpixels and one long second color subpixel. The third subpixel column includes three middle third color subpixels. The second subpixel column is between the first subpixel column and the third subpixel column. Each second pixel includes fourth to sixth subpixel columns. The fourth subpixel column includes two short first color subpixels and one long first color subpixel. The fifth subpixel column includes three middle second color subpixels. The sixth subpixel column includes two short third color subpixels and one long third color subpixel. The fifth subpixel column is between the fourth subpixel column and the sixth subpixel column.

Description

Technical Field

[0001] This invention relates to a display device. Background Technology

[0002] In recent years, with the continuous advancement of display technology, consumers have increasingly higher demands for the display quality of display devices (such as image resolution, color saturation, and visual effects). Currently, most reflective liquid crystal display panels on the market consist of multiple pixels, each containing a red subpixel, a green subpixel, and a blue subpixel, enabling the liquid crystal display panel to produce color images. Under certain panel display technologies, a single-color subpixel within a pixel only exists in two states: lit and off. To generate grayscale variations, the subpixels need to be spatially divided, and different display areas are used to represent different grayscale levels. However, improper design can lead to defects such as visible bright and dark lines. Therefore, a method to solve the aforementioned problems is urgently needed. Summary of the Invention

[0003] The present invention provides a display device that can provide multiple grayscale variations of pixels and improve the problem of bright and dark patterns in the displayed image.

[0004] At least one embodiment of the present invention provides a display device. The display device includes a plurality of first pixels and a plurality of second pixels. The first pixels and second pixels are arranged alternately in a first direction and a second direction, wherein the first direction is perpendicular to the second direction. Each first pixel includes a first sub-pixel column, a second sub-pixel column, and a third sub-pixel column. The first sub-pixel column includes three medium-sized first-color sub-pixels. The second sub-pixel column includes two short-sized second-color sub-pixels and one long-sized second-color sub-pixel located between the two short-sized second-color sub-pixels. The third sub-pixel column includes three medium-sized third-color sub-pixels. The second sub-pixel column is located between the first sub-pixel column and the third sub-pixel column. Each second pixel includes a fourth sub-pixel column, a fifth sub-pixel column, and a sixth sub-pixel column. The fourth sub-pixel column includes two short-sized first-color sub-pixels and one long-sized first-color sub-pixel located between the two short-sized first-color sub-pixels. The fifth sub-pixel column includes three medium-sized second-color sub-pixels. The sixth sub-pixel column includes two short-sized third-color sub-pixels and one long-sized third-color sub-pixel located between the two short-sized third-color sub-pixels. The fifth sub-pixel column is located between the fourth sub-pixel column and the sixth sub-pixel column. Attached Figure Description

[0005] Figure 1A This is a top view schematic diagram of a first pixel according to an embodiment of the present invention;

[0006] Figure 1B This is a top view schematic diagram of a second pixel according to an embodiment of the present invention;

[0007] Figures 2A to 2D This is a top view schematic diagram of a display device in different states according to an embodiment of the present invention;

[0008] Figure 3A This is a top view schematic diagram of a first pixel according to an embodiment of the present invention;

[0009] Figure 3B This is a top view schematic diagram of a second pixel according to an embodiment of the present invention;

[0010] Figure 4A and Figure 4B They are Figure 3A A schematic diagram of the cross sections of line A-A' and line B-B'.

[0011] Symbol Explanation

[0012] 10: Display device

[0013] B1: Elongated third-color subpixel

[0014] B2: Medium-sized third-color subpixel

[0015] B3: Short third color subpixel

[0016] BM: Black Matrix

[0017] CF: Color Conversion Element

[0018] CH: Semiconductor Channel Layer

[0019] CL1: First sub-pixel column

[0020] CL2: Second sub-pixel column

[0021] CL3: Third subpixel column

[0022] CL4: Fourth sub-pixel column

[0023] CL5: Fifth sub-pixel column

[0024] CL6: Sixth sub-pixel column

[0025] D: Drain electrode

[0026] D1: First Direction

[0027] D2: Second Direction

[0028] DO1: First output electrode

[0029] DO2: Second output electrode

[0030] G: Gate

[0031] G1: Elongated second-color subpixel

[0032] G2: Medium-sized second-color subpixel

[0033] G3: Short second-color subpixel

[0034] I1: First insulating layer

[0035] I2: Second insulating layer

[0036] I3: Third insulating layer

[0037] I4: Fourth Insulation Layer

[0038] LC: Liquid crystal molecules

[0039] LB1, LB2, LB3, LG1, LG2, LG3, LR1, LR2, LR3: Length

[0040] O1: Long opening

[0041] O2: Medium-sized opening

[0042] O3: Short opening

[0043] PE1: Long pixel electrode

[0044] PE2: Medium-sized pixel electrode

[0045] PE3: Short pixel electrode

[0046] PX1: First pixel

[0047] PX2: Second pixel

[0048] R1: Long first color subpixel

[0049] R2: Medium-sized first color subpixel

[0050] R3: Short first color subpixel

[0051] S: Source

[0052] SB1: First substrate

[0053] SB2: Second substrate

[0054] T1: First thin-film transistor

[0055] T2: Second thin-film transistor

[0056] WB,WG,WR: Width Detailed Implementation

[0057] Figure 1A This is a top view schematic diagram of a first pixel according to an embodiment of the present invention. Please refer to... Figure 1AThe first pixel PX1 includes a first sub-pixel column CL1, a second sub-pixel column CL2, and a third sub-pixel column CL3. The first sub-pixel column CL1, the second sub-pixel column CL2, and the third sub-pixel column CL3 are arranged in a first direction D1. The second sub-pixel column CL2 is located between the first sub-pixel column CL1 and the third sub-pixel column CL3.

[0058] The first sub-pixel column CL1, the second sub-pixel column CL2, and the third sub-pixel column CL3 each correspond to different colors. In some embodiments, one of the first sub-pixel column CL1, the second sub-pixel column CL2, and the third sub-pixel column CL3 includes a red filter element (and / or red quantum dot material), another includes a green filter element (and / or green quantum dot material), and yet another includes a blue filter element (and / or blue quantum dot material).

[0059] The first subpixel column CL1 includes three medium-sized first-color subpixels R2. The medium-sized first-color subpixels R2 are arranged in the second direction D2. In some embodiments, the first direction D1 is perpendicular to the second direction D2. In this embodiment, each medium-sized first-color subpixel R2 has a length LR2 and a width WR, and the display area of ​​each medium-sized first-color subpixel R2 is, for example, the product of the length LR2 and the width WR.

[0060] The second subpixel column CL2 includes two short second-color subpixels G3 and one long second-color subpixel G1 located between the two short second-color subpixels G3. The short second-color subpixels G3 and the long second-color subpixel G1 are arranged in the second direction D2. In this embodiment, each short second-color subpixel G3 has a length LG3 and a width WG, and the display area of ​​the short third-color subpixel G3 is, for example, the product of the length LG3 and the width WG. In this embodiment, each long second-color subpixel G1 has a length LG1 and a width WG, and the display area of ​​the long third-color subpixel G1 is, for example, the product of the length LG1 and the width WG.

[0061] The third subpixel column CL3 includes three medium-sized third-color subpixels B2. The medium-sized third-color subpixels B2 are arranged in the second direction D2. In this embodiment, each medium-sized third-color subpixel B2 has a length LB2 and a width WB, and the display area of ​​the medium-sized third-color subpixel B2 is, for example, the product of the length LB2 and the width WB.

[0062] In this embodiment, in the first pixel PX1, the elongated second color sub-pixel G1 completely overlaps with the middle one of the three medium first color sub-pixels R2 and the middle one of the three medium third color sub-pixels B2 in the first direction D1. Furthermore, the elongated second color sub-pixel G1 partially overlaps with the two outermost medium first color sub-pixels R2 and the two outermost medium third color sub-pixels B2 in the first direction D1. Additionally, the two outermost medium first color sub-pixels R2 each partially overlap with the two short second color sub-pixels G3, and the two outermost medium third color sub-pixels B2 also partially overlap with the two short second color sub-pixels G3.

[0063] Please refer to Figure 1B The second pixel PX2 includes a fourth sub-pixel column CL4, a fifth sub-pixel column CL5, and a sixth sub-pixel column CL6. These sub-pixel columns CL4, CL5, and CL6 are arranged in the first direction D1. The fifth sub-pixel column CL5 is located between the fourth and sixth sub-pixel columns CL4 and CL6.

[0064] The fourth sub-pixel column CL4, the fifth sub-pixel column CL5, and the sixth sub-pixel column CL6 each correspond to a different color. In some embodiments, one of the fourth sub-pixel column CL4, the fifth sub-pixel column CL5, and the sixth sub-pixel column CL6 includes a red filter element (and / or red quantum dot material), another includes a green filter element (and / or green quantum dot material), and yet another includes a blue filter element (and / or blue quantum dot material). In this embodiment, the first sub-pixel column CL1 and the fourth sub-pixel column CL4 are sub-pixel columns of the same color, the second sub-pixel column CL2 and the fifth sub-pixel column CL5 are sub-pixel columns of the same color, and the third sub-pixel column CL3 and the sixth sub-pixel column CL6 are sub-pixel columns of the same color.

[0065] The fourth subpixel column CL4 includes two short first-color subpixels R3 and one long first-color subpixel R1 located between the two short first-color subpixels R3. The short first-color subpixels R3 and the long first-color subpixel R1 are arranged in the second direction D2. In this embodiment, each short first-color subpixel R3 has a length LR3 and a width WR, and the display area of ​​the short first-color subpixel R3 is, for example, the product of the length LR3 and the width WR. In this embodiment, each long first-color subpixel R1 has a length LR1 and a width WR, and the display area of ​​the long first-color subpixel R1 is, for example, the product of the length LR1 and the width WR.

[0066] The fifth sub-pixel column CL5 includes three medium-sized second-color sub-pixels G2. The medium-sized second-color sub-pixels G2 are arranged in the second direction D2. In this embodiment, each medium-sized second-color sub-pixel G2 has a length LG2 and a width WG, and the display area of ​​the medium-sized second-color sub-pixel G2 is, for example, the product of the length LG2 and the width WG.

[0067] The sixth subpixel column CL6 includes two short third-color subpixels B3 and one long third-color subpixel B1 located between the two short third-color subpixels B3. The short third-color subpixels B3 and the long third-color subpixel B1 are arranged in the second direction D2. In this embodiment, each short third-color subpixel B3 has a length LB3 and a width WB, and the display area of ​​the short third-color subpixel B3 is, for example, the product of the length LB3 and the width WB. In this embodiment, each long third-color subpixel B1 has a length LB1 and a width WB, and the display area of ​​the long third-color subpixel B1 is, for example, the product of the length LB1 and the width WB.

[0068] In this embodiment, in the second pixel PX2, the elongated first color sub-pixel R1 and the elongated third color sub-pixel B1 completely overlap with the middle one of the three medium-sized second color sub-pixels G2 in the first direction D1, and partially overlap with the two on the sides of the three medium-sized second color sub-pixels G2. In addition, the two on the sides of the three medium-sized second color sub-pixels G2 also partially overlap with the two short first color sub-pixels R3 and the two short third color sub-pixels B3, respectively.

[0069] Please also refer to Figure 1A and Figure 1B The length LR1 is greater than the length LR2, and the length LR2 is greater than the length LR3. For example, the length LR1 is four times the length LR3, the length LR2 is twice the length LR3, and the length LR1 is twice the length LR2. In this case, the display area of ​​the elongated first-color sub-pixel R1 is four times the display area of ​​the short first-color sub-pixel R3, the display area of ​​the medium first-color sub-pixel R2 is twice the display area of ​​the short first-color sub-pixel R3, and the display area of ​​the elongated first-color sub-pixel R1 is twice the display area of ​​the medium first-color sub-pixel R2.

[0070] Length LG1 is greater than length LG2, and length LG2 is greater than length LG3. For example, length LG1 is four times length LG3, length LG2 is twice length LG3, and length LG1 is twice length LG2. In this case, the display area of ​​the long second-color sub-pixel G1 is four times the display area of ​​the short second-color sub-pixel G3, the display area of ​​the medium second-color sub-pixel G2 is twice the display area of ​​the short second-color sub-pixel G3, and the display area of ​​the long second-color sub-pixel G1 is twice the display area of ​​the medium second-color sub-pixel G2.

[0071] Length LB1 is greater than length LB2, and length LB2 is greater than length LB3. For example, length LB1 is four times length LB3, length LB2 is twice length LB3, and length LB1 is twice length LB2. In this case, the display area of ​​the long third-color sub-pixel B1 is four times the display area of ​​the short third-color sub-pixel B3, the display area of ​​the medium third-color sub-pixel B2 is twice the display area of ​​the short third-color sub-pixel B3, and the display area of ​​the long third-color sub-pixel B1 is twice the display area of ​​the medium third-color sub-pixel B2.

[0072] In some embodiments, the widths WR, WG, and WB may be the same or different from each other. In some embodiments, the lengths LR1, LG1, and LB1 may be the same or different from each other, the lengths LR2, LG2, and LB2 may be the same or different from each other, and the lengths LR3, LG3, and LB3 may be the same or different from each other.

[0073] In some embodiments, the black matrix BM overlaps with the first pixel PX1 and the second sub-pixel PX2, wherein the black matrix BM includes a plurality of elongated openings O1, a plurality of medium-sized openings O2, and a plurality of short openings O3. The elongated openings O1 define elongated first-color sub-pixels R1, G1, and B1. The medium-sized openings O2 define medium-sized first-color sub-pixels R2, G2, and B2. The short openings O3 define short first-color sub-pixels R3, G3, and B3.

[0074] In some embodiments, the length of each elongated opening O1 (i.e., length LR1, length LG1, or length LB1) is four times the length of each short opening O3 (i.e., length LR3, length LG3, or length LB3), the length of each medium opening O2 (i.e., length LR2, length LG2, and length LB2) is twice the length of each short opening O3, and the length of each elongated opening O1 is twice the length of each medium opening O2.

[0075] In some embodiments, the elongated opening O1, the medium opening O2, and the short opening O3 have filter elements (and / or quantum dot materials) that define the color of the sub-pixel.

[0076] Figures 2A to 2D This is a top view schematic diagram of a display device 10 in different states according to an embodiment of the present invention. Figures 2A to 2D In the display device 10, there are multiple first pixels PX1 and multiple second pixels PX2. A description of the first pixels PX1 and the second pixels PX2 can be found in [reference needed]. Figure 1A and Figure 1B And related explanations, which will not be repeated here.

[0077] First pixel PX1 and second pixel PX2 are alternately arranged in both the first direction D1 and the second direction D2. In some embodiments, among the first pixel PX1 and second pixel PX2 arranged in the first direction D1, the elongated second color sub-pixel R1, the elongated first color sub-pixel G1, and the elongated third color sub-pixel B1 are aligned in the first direction D1. In some embodiments, among the first pixel PX1 and second pixel PX2 arranged in the second direction D2, the first sub-pixel column CL1, the second sub-pixel column CL2, and the third sub-pixel column CL3 are aligned in the second direction D2 with the fourth sub-pixel column CL4, the fifth sub-pixel column CL5, and the sixth sub-pixel column CL6, respectively.

[0078] Please refer to Figures 2A to 2D The display device 10 includes multiple operating modes. Each sub-pixel column includes four different operating modes. Figures 2B to 2D In the middle, closed subpixels are displayed as blank squares.

[0079] Figure 2A The first sub-pixel column CL1, the second sub-pixel column CL2, the third sub-pixel column CL3, the fourth sub-pixel column CL4, the fifth sub-pixel column CL5, and the sixth sub-pixel column CL6 in the first operating mode are displayed. In the first mode, all subpixels in the sub-pixel columns remain on, thus producing the brightest image.

[0080] Figure 2BThe image displays the first subpixel column CL1, the second subpixel column CL2, the third subpixel column CL3, the fourth subpixel column CL4, the fifth subpixel column CL5, and the sixth subpixel column CL6 in the second operating mode. In the second mode, some subpixels in the subpixel columns are turned off, thereby creating a second brighter image. Specifically, the medium-sized first-color sub-pixel R2 in the middle of the first sub-pixel column CL1 is turned off, and the medium-sized first-color sub-pixels R2 on both sides are turned on. The short-sized second-color sub-pixels G3 on both sides of the second sub-pixel column CL2 are turned off, and the long-sized second-color sub-pixel G1 in the middle is turned on. The medium-sized third-color sub-pixel B2 in the middle of the third sub-pixel column CL3 is turned off, and the medium-sized third-color sub-pixels B2 on both sides are turned on. The short-sized first-color sub-pixels R3 on both sides of the fourth sub-pixel column CL4 are turned off, and the long-sized first-color sub-pixel R1 in the middle is turned on. The medium-sized second-color sub-pixel G2 in the middle of the fifth sub-pixel column CL5 is turned off, and the medium-sized second-color sub-pixels G2 on both sides are turned on. The short-sized third-color sub-pixels B3 on both sides of the sixth sub-pixel column CL6 are turned off, and the long-sized third-color sub-pixel B1 in the middle is turned on.

[0081] If all the subpixels in a single pixel are medium-sized subpixels, in the second operating mode, the middle medium-sized subpixels will be turned off, causing the turned-off medium-sized subpixels in a single pixel to form a line, thus creating bright and dark lines on the display screen. Compared to setting all subpixels to the same shape, this embodiment avoids the problem of bright and dark lines on the display screen caused by overly regular subpixel configuration by configuring short, medium, and long subpixels.

[0082] Figure 2CThe display shows the first sub-pixel column CL1, the second sub-pixel column CL2, the third sub-pixel column CL3, the fourth sub-pixel column CL4, the fifth sub-pixel column CL5, and the sixth sub-pixel column CL6 in the third operating mode. In the third mode, some subpixels in the sub-pixel columns are turned off, thereby producing a third bright image. Specifically, the following steps are taken: First, the medium-sized first-color sub-pixel R2 in the middle of the first sub-pixel column CL1 is enabled, while the medium-sized first-color sub-pixels R2 on both sides are disabled; second, the short second-color sub-pixels G3 on both sides of the second sub-pixel column CL2 are enabled, while the long second-color sub-pixel G1 in the middle is disabled; third, the medium-sized third-color sub-pixel B2 in the middle of the third sub-pixel column CL3 is enabled, while the medium third-color sub-pixels B2 on both sides are disabled; fourth, the short first-color sub-pixels R3 on both sides of the fourth sub-pixel column CL4 are enabled, while the long first-color sub-pixel R1 in the middle is disabled; fifth, the medium-sized second-color sub-pixel G2 in the middle of the fifth sub-pixel column CL5 is enabled, while the medium second-color sub-pixels G2 on both sides are disabled; sixth, the short third-color sub-pixels B3 on both sides of the sixth sub-pixel column CL6 are enabled, while the long third-color sub-pixel B1 in the middle is disabled.

[0083] If all the subpixels in a single pixel are medium-sized subpixels, in the third operation mode, the medium-sized subpixels in the middle will all be activated, causing the activated medium-sized subpixels in a single pixel to form a line, thus creating bright and dark lines on the display screen. Compared to setting all subpixels to the same shape, this embodiment avoids the problem of bright and dark lines on the display screen caused by overly regular subpixel configuration by configuring short, medium, and long subpixels.

[0084] Figure 2D The image displays the first subpixel column CL1, the second subpixel column CL2, the third subpixel column CL3, the fourth subpixel column CL4, the fifth subpixel column CL5, and the sixth subpixel column CL6 in the fourth operating mode. In this fourth mode, all subpixels in each subpixel column remain off, resulting in the darkest image.

[0085] It is important to note that different sub-pixel columns within the same pixel can be in different operating modes, thus producing different grayscale effects. In other words, in the first pixel PX1, the first sub-pixel column CL1, the second sub-pixel column CL2, and the third sub-pixel column CL3 each have 4 operating modes. Therefore, the first pixel PX1 can obtain a total of 64 (4×4×4) colors by combining sub-pixel columns with different operating modes. Similarly, in the second pixel PX2, the fourth sub-pixel column CL4, the fifth sub-pixel column CL5, and the sixth sub-pixel column CL6 each have 4 operating modes. Therefore, the second pixel PX2 can obtain a total of 64 (4×4×4) colors by combining sub-pixel columns with different operating modes.

[0086] Figure 3A This is a top view schematic diagram of a first pixel according to an embodiment of the present invention. Figure 3B This is a top view schematic diagram of a second pixel according to an embodiment of the present invention. Figure 4A and Figure 4B They are Figure 3A A schematic diagram of the cross-sections of line A-A' and line B-B'. It must be noted here that... Figures 3A to 4B The embodiments follow Figure 1A and Figure 1B The component reference numerals and partial contents of the embodiments are described below, wherein the same or similar reference numerals are used to represent the same or similar components, and descriptions of the same technical content are omitted. For explanations of the omitted parts, please refer to the foregoing embodiments, and they will not be repeated here. Furthermore, to better illustrate the structure of pixels, Figure 3A and Figure 3B The pixel electrodes, output electrodes, scan lines, data lines, and thin-film transistors are shown, while other components are omitted. Figure 3A and Figure 3B In China, thin-film transistors are simply represented by circuit diagram symbols.

[0087] Please refer to Figures 3A to 3B Each of the following sub-pixel columns—CL1, CL2, CL3, CL4, CL5, and CL6—includes a first thin-film transistor (TFT) T1, a second TFT T2, a first output electrode DO1, and a second output electrode DO2. The TFT T1, arranged in the first direction D1, is electrically connected to the same scan line SL. The TFT T2, also arranged in the first direction D1, is electrically connected to the same scan line SL. The TFT T1 and TFT T2, arranged in the second direction D2, are electrically connected to the same data line DL.

[0088] The three medium-sized first-color sub-pixels of the first sub-pixel column CL1, the three medium-sized third-color sub-pixels of the third sub-pixel column CL3, and the three medium-sized second-color sub-pixels of the fifth sub-pixel column CL5 each include a medium-sized pixel electrode PE2, and two of the medium-sized pixel electrodes PE2 are electrically connected to each other.

[0089] In this embodiment, in the first sub-pixel column CL1, the third sub-pixel column CL3, and the fifth sub-pixel column CL5, the two medium-sized pixel electrodes PE2 located on both sides are electrically connected to each other through the first output electrode DO1 and are electrically connected to the first thin-film transistor T1; the medium-sized pixel electrode PE2 located in the middle is electrically connected to the second output electrode DO2 separated from the first output electrode DO1, and is electrically connected to the second thin-film transistor T2 through the second output electrode DO2.

[0090] In this embodiment, in the second sub-pixel column CL2, the fourth sub-pixel column CL4, and the sixth sub-pixel column CL6, the two short pixel electrodes PE3 located on both sides are electrically connected to each other through the first output electrode DO1 and are electrically connected to the second thin film transistor T2; the long pixel electrode PE1 located in the middle is electrically connected to the second output electrode DO2 separated from the first output electrode DO1, and is electrically connected to the first thin film transistor T1 through the second output electrode DO2.

[0091] In this embodiment, the first output electrode DO1 in the first sub-pixel column CL1, the third sub-pixel column CL3, and the fifth sub-pixel column CL5 is electrically connected to the first thin-film transistor T1, while the first output electrode DO1 in the second sub-pixel column CL2, the fourth sub-pixel column CL4, and the sixth sub-pixel column CL6 is electrically connected to the second thin-film transistor T2.

[0092] In the first pixel PX1, the medium-sized pixel electrodes PE2 on both sides of the first sub-pixel column CL1, the elongated pixel electrode PE1 in the middle of the second sub-pixel column CL2, and the medium-sized pixel electrodes PE2 on both sides of the third sub-pixel column CL3 can be electrically connected to the same scan line SL through three first thin-film transistors T1. In the second pixel PX2, the elongated pixel electrode PE1 in the middle of the fourth sub-pixel column CL1, the medium-sized pixel electrodes PE2 on both sides of the fifth sub-pixel column CL5, and the elongated pixel electrode PE1 in the middle of the sixth sub-pixel column CL2 can be electrically connected to the same scan line SL through three first thin-film transistors T1.

[0093] In the first pixel PX1, the medium-sized pixel electrode PE2 located in the middle of the first sub-pixel column CL1, the short-sized pixel electrodes PE3 located on both sides of the second sub-pixel column CL2, and the medium-sized pixel electrode PE2 located in the middle of the third sub-pixel column CL3 can be electrically connected to the same scan line SL through three second thin-film transistors T2. In the second pixel PX2, the short-sized pixel electrodes PE3 located on both sides of the fourth sub-pixel column CL4, the medium-sized pixel electrode PE2 located in the middle of the fifth sub-pixel column CL5, and the short-sized pixel electrodes PE3 located on both sides of the sixth sub-pixel column CL6 can be electrically connected to the same scan line SL through three second thin-film transistors T2.

[0094] Please refer to Figures 3A to 4B The first thin-film transistor T1 and the second thin-film transistor T2 each include a gate G, a semiconductor channel layer CH, a source S, and a drain D.

[0095] A semiconductor channel layer CH is disposed on a first substrate SB1. A first insulating layer I1 is located on a gate G. The gate G is located on the first insulating layer I1 and overlaps the semiconductor channel layer CH. The gate G is electrically connected to the corresponding scan line. A second insulating layer I2 is located on the gate G and the first insulating layer I1. The source S and drain D are located on the second insulating layer I2 and are electrically connected to the semiconductor channel layer CH. The source S is electrically connected to the corresponding data line.

[0096] In this embodiment, both the first thin-film transistor T1 and the second thin-film transistor T2 are top-gate thin-film transistors, but the invention is not limited thereto. In other embodiments, at least one of the first thin-film transistor T1 and the second thin-film transistor T2 may be a bottom-gate thin-film transistor, a dual-gate thin-film transistor, or other types of thin-film transistors.

[0097] The third insulating layer I3 is located on the source S, drain D, and the second insulating layer I2. The first output electrode DO1 and the second output electrode DO2 are located on the third insulating layer I3 and are electrically connected to the drain D of the corresponding first thin-film transistor T1 or the drain D of the second thin-film transistor T2, respectively.

[0098] The fourth insulating layer I4 is located on the first output electrode DO1, the second output electrode DO2, and the third insulating layer I3. The elongated pixel electrode PE1, the medium-sized pixel electrode PE2, and the short pixel electrode PE3 are located on the fourth insulating layer I4 and are electrically connected to the corresponding first output electrode DO1 or second output electrode DO2, respectively.

[0099] In some embodiments, the materials of the elongated pixel electrode PE1, the medium-sized pixel electrode PE2, and the short pixel electrode PE3 include transparent conductive materials (e.g., indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium gallium zinc oxide, or a stacked layer of at least two of the above), but the present invention is not limited thereto. In other embodiments, the elongated pixel electrode PE1, the medium-sized pixel electrode PE2, and the short pixel electrode PE3 are reflective pixel electrodes, and their materials include metals. When the elongated pixel electrode PE1, the medium-sized pixel electrode PE2, and the short pixel electrode PE3 are reflective pixel electrodes, the display device is a reflective liquid crystal display device or a transflective liquid crystal display device.

[0100] The liquid crystal molecule LC is located on the long pixel electrode PE1, the medium pixel electrode PE2 and the short pixel electrode PE3, and is located between the first substrate SB1 and the second substrate SB2.

[0101] The color conversion element CF and the black matrix (not shown) are located on the second substrate SB2, wherein the color conversion element CF includes a filter element and / or quantum dot material.

[0102] In summary, the display device of the present invention includes short sub-pixels, medium sub-pixels, and long sub-pixels. By configuring short sub-pixels, medium sub-pixels, and long sub-pixels, various grayscale variations of pixels can be provided, and the problem of bright and dark patterns in the displayed image can be improved.

Claims

1. A display device, comprising: a plurality of first pixels, each of the first pixels comprising: a first sub-pixel column comprising three middle first color sub-pixels; a second sub-pixel column comprising two short second color sub-pixels and one long second color sub-pixel between the two short second color sub-pixels; and a third sub-pixel column comprising three middle third color sub-pixels, wherein the second sub-pixel column is between the first sub-pixel column and the third sub-pixel column; and a plurality of second pixels, each of the second pixels comprising: a fourth sub-pixel column comprising two short first color sub-pixels and one long first color sub-pixel between the two short first color sub-pixels; a fifth sub-pixel column comprising three middle second color sub-pixels; and a sixth sub-pixel column comprising two short third color sub-pixels and one long third color sub-pixel between the two short third color sub-pixels, wherein the fifth sub-pixel column is between the fourth sub-pixel column and the sixth sub-pixel column, and the first pixels and the second pixels are alternately arranged in a first direction and a second direction, wherein the first direction is perpendicular to the second direction, wherein a length and an area of the long first color sub-pixel are greater than a length and an area of the middle first color sub-pixel, and the length and the area of the middle first color sub-pixel are greater than a length and an area of the short first color sub-pixel; a length and an area of the long second color sub-pixel are greater than a length and an area of the middle second color sub-pixel, and the length and the area of the middle second color sub-pixel are greater than a length and an area of the short second color sub-pixel; a length and an area of the long third color sub-pixel are greater than a length and an area of the middle third color sub-pixel, and the length and the area of the middle third color sub-pixel are greater than a length and an area of the short third color sub-pixel; wherein the lengths are lengths along the second direction. 2.The display device of claim 1, wherein a length of each of the long first color sub-pixels is four times a length of each of the short first color sub-pixels, a length of each of the middle first color sub-pixels is twice a length of each of the short first color sub-pixels, and a length of each of the long first color sub-pixels is twice a length of each of the middle first color sub-pixels. 3.The display device of claim 1, wherein in each of the first pixels, the long second color sub-pixel completely overlaps with a middle one of the three middle first color sub-pixels in the first direction, and partially overlaps with two of the three middle first color sub-pixels on both sides. 4.The display device of claim 1, wherein the three middle first color sub-pixels of each of the first sub-pixel columns each comprise a middle pixel electrode, wherein two of the middle pixel electrodes on both sides are electrically connected to each other.

5. The display device of claim 4, wherein each of the first sub-pixel columns further comprises a first thin film transistor and a second thin film transistor, wherein two of the middle pixel electrodes in each of the first sub-pixel columns are electrically connected to the first thin film transistor, and another one of the middle pixel electrodes in each of the first sub-pixel columns is electrically connected to the second thin film transistor.

6. The display device of claim 1, wherein each of the two short first color sub-pixels of each of the fourth sub-pixel columns comprises one short pixel electrode, and the one long first color sub-pixel of each of the fourth sub-pixel columns comprises one long pixel electrode, wherein the short pixel electrodes of each of the fourth sub-pixel columns are electrically connected to each other.

7. The display device of claim 1, further comprising: a black matrix overlapping the first pixels and the second pixels, wherein the black matrix comprises a plurality of long openings, a plurality of middle openings, and a plurality of short openings, wherein the long openings define the long first color sub-pixels, the long second color sub-pixels, and the long third color sub-pixels, the middle openings define the middle first color sub-pixels, the middle second color sub-pixels, and the middle third color sub-pixels, and the short openings define the short first color sub-pixels, the short second color sub-pixels, and the short third color sub-pixels.

8. The display device of claim 7, wherein a length of each of the long openings is four times a length of each of the short openings, wherein a length of each of the middle openings is two times the length of each of the short openings, and wherein a length of each of the long openings is two times the length of each of the middle openings.

9. The display device of claim 1, wherein among the first pixels and the second pixels arranged in the first direction, the long second color sub-pixels, the long first color sub-pixels, and the long third color sub-pixels are aligned in the first direction.

10. The display device of claim 1, wherein among the first pixels and the second pixels arranged in the second direction, the first sub-pixel columns, the second sub-pixel columns, and the third sub-pixel columns are respectively aligned with the fourth sub-pixel columns, the fifth sub-pixel columns, and the sixth sub-pixel columns in the second direction.

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