TWI699600B - Display device - Google Patents

Abstract

A display device includes a first substrate, first signal lines, second signal lines, active elements, pixel electrodes, a second substrate, a black matrix, a first spacer, and a second spacer. The active elements are electrically connected with the first signal lines and the second signal lines. The black matrix includes first portions and second portions. The first portions overlap the first signal lines. The second portions overlap the second signal lines. The first spacer overlaps a source and a drain of one of the active elements. The second spacer overlaps a source and a drain of another one of the active elements. The shortest distance between the center of the first spacer and the center line of the closest one of the first portions is different from the shortest distance between the center of the second spacer and the center line of the closest one of the first portions.

Description

Display device

The present invention relates to a display device, and more particularly to a display device including a plurality of spacers.

Currently, a liquid crystal display device generally includes an upper substrate, a lower substrate, and a liquid crystal layer located between the upper substrate and the lower substrate. Generally speaking, when fabricating a liquid crystal display device, after the various elements on the upper substrate and the lower substrate are manufactured, the upper substrate and the lower substrate are paired, and the upper substrate and the lower substrate are fixed by sealing glue or other components. In each manufacturing process of the display device, if the manufacturing process shifts, the display quality of the display device will be affected.

The size of the cell gap is an important parameter that affects the display quality of the liquid crystal display device. Generally, multiple spacers are arranged between the upper substrate and the lower substrate of the liquid crystal display device to control the size of the liquid crystal layer gap, so that the size of the liquid crystal layer gap of the entire liquid crystal display device can be uniformly distributed. However, if the manufacturing process of the upper substrate and the lower substrate pair is shifted, the spacers cannot be aligned to the preset positions. If the spacers are not aligned with the preset positions, the gap distribution of the liquid crystal layer is not uniform, and the display quality of the liquid crystal display device is degraded.

In the liquid crystal display device, the electric field between the common electrode and the pixel electrode is used to control the turning of the liquid crystal molecules. Generally speaking, the common electrode is electrically connected to a plurality of wires connected to the driving circuit through a plurality of via holes. However, if the process of forming the vias is shifted, there is no way for the common electrode and the wire to be electrically connected normally, resulting in uneven voltage distribution on the common electrode and resulting in degradation of the display quality of the display device.

The present invention provides a display device, which can improve the problem of display quality degradation caused by process deviation.

At least one embodiment of the present invention provides a display device. The display device includes a first substrate, a plurality of first signal lines and a plurality of second signal lines, a plurality of active devices, a plurality of pixel electrodes, a second substrate, a black matrix, a first spacer, and a second spacer. A plurality of first signal lines and a plurality of second signal lines are located on the first substrate, and respectively extend along the first extension direction and the second extension direction. Each active element is electrically connected to a corresponding one of the first signal line and a corresponding one of the second signal line. The pixel electrode is electrically connected to the active device. The second substrate faces the first substrate. The black matrix is located on the second substrate. The black matrix includes a plurality of first parts and a plurality of second parts. The first part extends along the first extension direction and overlaps the first signal line in a direction perpendicular to the first substrate, and the middle line of each first part extends substantially along the corresponding first signal line. The second part extends along the second extension direction and overlaps the second signal line in a direction perpendicular to the first substrate, and the middle line of each second part extends substantially along the corresponding second signal line. The first spacer overlaps the source and drain of one of the active devices in a direction perpendicular to the first substrate. The second spacer overlaps the source and drain of the other one of the active devices in a direction perpendicular to the first substrate. The shortest distance between the center of the first spacer and the middle line of the closest one in the first part is different from the shortest distance between the center of the second spacer and the middle line of the closest one in the first part.

At least one embodiment of the present invention provides a display device. The display device includes a first substrate, a second substrate, a plurality of first signal lines, a plurality of second signal lines, a plurality of active components, a plurality of pixel electrodes, a first common signal line, a second common signal line, a first The pad, the second pad and the common electrode. A plurality of first signal lines and a plurality of second signal lines are located on the first substrate, and respectively extend along the first extension direction and the second extension direction. Each active element is electrically connected to a corresponding one of the first signal line and a corresponding one of the second signal line. The pixel electrodes are electrically connected to the active device. The first common signal line and the second common signal line are located on the first substrate. The first pad and the second pad are respectively connected to the first common signal line and the second common signal line. The common electrode overlaps the pixel electrode in a direction perpendicular to the first substrate. The common electrode is electrically connected to the first pad through the first through hole. The common electrode is electrically connected to the second pad through the second through hole. The center of the first via hole deviates from the center of the first pad along the first offset direction. The center of the second via hole deviates from the center of the second pad along the second offset direction. The second substrate faces the first substrate.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

FIG. 1A is a schematic top view of a display device according to an embodiment of the invention. FIG. 1B is a partial enlarged view of the display device of FIG. 1A. FIG. 1C is an enlarged view of some components of the display device of FIG. 1B. Fig. 1D is a cross-sectional view taken along the section line aa' of Fig. 1B. FIG. 1E is a partial enlarged view of the display device of FIG. 1A. FIG. 1F is an enlarged view of some components of the display device of FIG. 1A. FIG. 1G is an enlarged view of some components of the display device of FIG. 1A. For the convenience of description, FIGS. 1A to 1G respectively omit some components of the display device.

Please refer to FIG. 1A to FIG. 1D. FIG. 1B corresponds to one of the sub-pixels of FIG. 1A, for example.

The display device 10 includes a first substrate SB1, a plurality of first signal lines SL and a plurality of second signal lines DL, a plurality of active devices T, a plurality of pixel electrodes PE, a second substrate SB2, a black matrix BM, and a first gap PS1 and the second spacer PS2. In this embodiment, the display device 10 further includes a protective layer PV, a display medium L, a plurality of blue filter elements C3, a plurality of green filter elements C2, a plurality of red filter elements C1, a common signal line CL, a connection The pad PD, the common electrode CE, the third spacer PS3, and the fourth spacer PS4.

The plurality of first signal lines SL and the plurality of second signal lines DL are located on the first substrate SB1 and extend along the first extension direction E1 and the second extension direction E2, respectively.

Each active device T is electrically connected to a corresponding one of the first signal line SL and a corresponding one of the second signal line DL. In this embodiment, the active device T is located on the first substrate SB1. The active device T includes a channel layer CH, a gate G, a source S and a drain D. The gate G is electrically connected to the corresponding one of the first signal lines SL. The gate electrode G overlaps the channel layer CH in a direction P1 perpendicular to the first substrate SB1, and a gate insulating layer GI is sandwiched between the gate electrode G and the channel layer CH. The source S and the drain D are located on the channel layer CH, and are electrically connected to the channel layer CH, respectively. The source S is electrically connected to a corresponding one of the second signal lines DL. In this embodiment, the source electrode S is connected to the second signal line DL as a whole, but the invention is not limited to this.

Although in this embodiment, the first signal line SL is electrically connected to the gate G of the active device T and the second signal line DL is electrically connected to the source S of the active device T, the invention is not limited thereto. In other embodiments, the first signal line SL is electrically connected to the source S of the active device T and the second signal line DL is electrically connected to the gate G of the active device T. The extending directions of the first signal line SL and the second signal line DL can be opposite to each other.

Although in this embodiment, the active device T is a bottom gate type thin film transistor as an example, the invention is not limited to this. In other embodiments, the active device T may also be a top gate type or other types of thin film transistors.

The protective layer PV covers the active element T. The protective layer PV is a single-layer or multi-layer insulating layer.

The pixel electrode PE is electrically connected to the active element T. For example, the pixel electrode is located on the protective layer PV, and the pixel electrode PE is electrically connected to the drain D of the active device T through the contact window H1. The contact window H1, for example, penetrates the protective layer PV, but the invention is not limited to this. In other embodiments, the contact window H1 may also penetrate through other insulating layers.

The common electrode CE overlaps a plurality of pixel electrodes PE in a direction P1 perpendicular to the first substrate SB1. In this embodiment, a passivation layer (not shown) is sandwiched between the common electrode CE and the pixel electrode PE. The common electrode CE has multiple slits.

In this embodiment, the common signal line CL and the pad PD are located on the first substrate SB1. The pad PD is connected to the common signal line CL. In this embodiment, the common signal line CL and the pad PD are connected as one body. The first signal line SL, the common signal line CL, and the pad PD belong to the same conductive layer, but the invention is not limited to this. In other embodiments, the common signal line CL and the pad PD and the first signal line SL belong to a different conductive layer. The common electrode CE is electrically connected to the pad PD through the through hole TH. The via hole TH penetrates, for example, the gate insulating layer GI, the protective layer PV, and the passivation layer (not shown) between the common electrode CE and the pixel electrode PE, but the invention is not limited thereto. In other embodiments, the through hole TH may also penetrate through other insulating layers.

The second substrate SB2 faces the first substrate SB1. The plurality of blue filter elements C3, the plurality of green filter elements C2, the plurality of red filter elements C1, and the black matrix BM are located on the second substrate SB2. The plurality of blue filter elements C3, the plurality of green filter elements C2, the plurality of red filter elements C1, and the black matrix BM are located between the first substrate SB1 and the second substrate SB2. The black matrix BM is located between the adjacent blue filter element C3, green filter element C2, and red filter element C1.

The black matrix BM includes a plurality of first parts L1 and a plurality of second parts L2. The first portion L1 extends along the first extension direction E1 and overlaps the first signal line SL in the direction P1 perpendicular to the first substrate SB1. The middle line M1 of the first portion L1 is substantially in the direction P1 perpendicular to the first substrate SB1. It overlaps the first signal line SL, and the middle line M1 of each first portion L1 extends substantially along the corresponding first signal line SL, but the invention is not limited to this. The second portion L2 extends along the direction of the second extension E2 and overlaps the second signal line DL in the direction P1 perpendicular to the first substrate SB1. The middle line M2 of the second portion L2 is in the direction P1 perpendicular to the first substrate SB1 It substantially overlaps the second signal line DL, and the middle line M2 of each second portion L2 substantially extends along the corresponding second signal line DL, but the invention is not limited to this. The center line M2 of the second part L2 or the center line M1 of the first part L1 is zigzag. In this embodiment, the second portion L2 and the second signal line DL are saw-toothed, and the center line M2 of the second portion L2 is saw-toothed.

In this embodiment, the first signal line SL is a scan line and the second signal line DL is a data line, the first part L1 shields the scan line and the second part L2 shields the data line, but the invention is not limited thereto. In other embodiments, the first signal line SL is a data line and the second signal line DL is a scan line, the first portion L1 shields the data line and the second portion L2 shields the scan line.

Please refer to FIG. 1C and FIG. 1E. In this embodiment, the black matrix BM further includes a first shielding portion B1 and a second shielding portion B2. The first shielding portion B1 and the second shielding portion B2 are located at the junction of the first portion L1 and the second portion L2.

The first spacer PS1 and the second spacer PS2 are located on the second substrate SB2. In this embodiment, the first spacer PS1 and the second spacer PS2 are located on the black matrix BM.

The first spacer PS1 overlaps the source S and the drain D of one of the active devices T in a direction P1 perpendicular to the first substrate SB1. The second spacer PS2 overlaps the source S and the drain D of the other one of the active devices T in a direction P1 perpendicular to the first substrate SB1.

The shortest distance Y1 between the center CP1 of the first spacer PS1 and the center line M1 of the closest one of the first part L1 is different from the center CP2 of the second spacer PS2 and the center line of the closest one of the first part L1 The shortest distance of M1 is Y2. Thereby, the first spacer PS1 overlaps the area of the corresponding drain D and source S in the direction P1 perpendicular to the first substrate SB1, and the second spacer PS2 overlaps the corresponding area in the direction P1 perpendicular to the first substrate SB1. The total area of the drain electrode D and the source electrode S is not easily affected by the offset of the first substrate SB1 and the second substrate SB2 in the assembly process. More specifically, even if the first substrate SB1 and the second substrate SB2 of the present embodiment are offset when they are paired, the first spacer PS1 overlaps the corresponding drain electrode D and the corresponding drain electrode P1 in the direction P1 perpendicular to the first substrate SB1. The area of the source electrode S and the second spacer PS2 overlap in the direction P1 perpendicular to the first substrate SB1 to the sum of the area of the corresponding drain electrode D and source electrode S and the expected value when the pair is not offset. There is too much difference, therefore, the process yield of the display device 10 can be improved, and the problem of display quality degradation caused by process deviation can be improved.

In some embodiments, the shortest distance X1 of the middle line M2 between the center CP1 of the first spacer PS1 and the closest one of the second portion L2 is different from the center CP2 of the second spacer PS2 and the smallest distance of the second portion L2. The shortest distance X2 of the line M2 among the closest ones. In this way, the problem of display quality degradation caused by process deviation can be further improved.

In this embodiment, the shortest distance between the center CP1' of the first shielding portion B1 and the closest one of the first portion L1 to the middle line M1 is different from the center CP2' of the second shielding portion B2 and the shortest distance in the first portion L1. The shortest distance of the line M1 among the closest ones. In some embodiments, the shortest distance between the center line M2 of the center CP1' of the first shielding portion B1 and the closest one of the second portion L2 is different from the center CP2' of the second shielding portion B2 and the second portion L2. The shortest distance between the line M2 of the closest one. Thereby, the first spacer PS1 and the second spacer PS2 can be made less likely to deviate from the range of the first shielding portion B1 and the second shielding portion B2. In this embodiment, the center CP1' of the first shielding portion B1 overlaps the center CP1 of the first spacer PS1 in the direction P1 perpendicular to the first substrate SB1, and the center CP2' of the second shielding portion B2 is perpendicular to the first substrate SB1. The direction P1 of the substrate SB1 overlaps the center CP2 of the second spacer PS2.

In this embodiment, the shortest distance between the first spacer PS1 and the blue filter element C3 is smaller than the shortest distance between the first spacer PS1 and the green filter element C2 or the red filter element C1, and the second The shortest distance between the spacer PS2 and the blue filter element C3 is smaller than the shortest distance between the second spacer PS2 and the green filter element C2 or the red filter element C1, wherein the aforementioned shortest distance refers to the edges of both The shortest distance between. In other words, the first spacer PS1 and the second spacer PS2 are located between the blue filter element C3 and the green filter element C2 or between the blue filter element C3 and the red filter element C1. Thereby, the influence of the first spacer PS1 and the second spacer PS2 on the brightness of the display device 10 can be reduced.

In this embodiment, the shortest distance between the first shielding portion B1 and the blue filter element C3 is smaller than the shortest distance between the first shielding portion B1 and the green filter element C2 or the red filter element C1, and The shortest distance between the second shielding portion B2 and the blue filter element C3 is smaller than the shortest distance between the second shielding portion B2 and the green filter element C2 or the red filter element C1, wherein the aforementioned shortest distance refers to both The shortest distance between edges.

Please refer to FIGS. 1F and 1G. In this embodiment, the black matrix BM optionally further includes a third shielding portion B3 and a fourth shielding portion B4. The third shielding portion B3 and the fourth shielding portion B4 are located at the junction of the first portion L1 and the second portion L2.

The display device 10 optionally includes a third spacer PS3 and a fourth spacer PS4. The third spacer PS3 and the fourth spacer PS4 are located on the second substrate SB2. In this embodiment, the third spacer PS3 and the fourth spacer PS4 are located on the black matrix BM.

The third spacer PS3 overlaps the source S and the drain D of one of the active devices T in a direction P1 perpendicular to the first substrate SB1. The fourth spacer PS4 overlaps the source S and the drain D of the other one of the active devices T in a direction P1 perpendicular to the first substrate SB1.

The shortest distance Y3 between the center CP3 of the third spacer PS3 and the center line M1 of the closest one of the first part L1 is different from the center CP4 of the fourth spacer PS4 and the center line of the closest one of the first part L1 The shortest distance of M1 is Y4. Thereby, the third spacer PS3 overlaps the area of the corresponding drain D and source S in the direction P1 perpendicular to the first substrate SB1, and the fourth spacer PS4 overlaps the corresponding area in the direction P1 perpendicular to the first substrate SB1. The total area of the drain electrode D and the source electrode S is not easily affected by the offset of the first substrate SB1 and the second substrate SB2 in the assembly process. More specifically, even if the first substrate SB1 and the second substrate SB2 of the present embodiment are offset when they are paired, the third spacer PS3 overlaps the corresponding drain electrode D and the drain electrode in the direction P1 perpendicular to the first substrate SB1. The area of the source electrode S and the fourth spacer PS4 overlapping the corresponding drain electrode D and source electrode S in the direction P1 perpendicular to the first substrate SB1 will not be too different from the expected value. Therefore, Therefore, the process yield of the display device 10 can be improved, and the problem of display quality degradation caused by process deviation can be improved.

In some embodiments, the shortest distance X3 of the middle line M2 between the center CP3 of the third spacer PS3 and the closest one of the second portion L2 is different from the center CP4 of the fourth spacer PS4 and the closest one of the second portion L2. The shortest distance X4 of the line M2 among the closest ones. In this way, the problem of display quality degradation caused by process deviation can be further improved.

In this embodiment, the shortest distance between the center CP3' of the third shielding portion B3 and the closest one of the first portion L1 to the middle line M1 is different from the center CP4' of the fourth shielding portion B4 and the shortest distance in the first portion L1. The shortest distance of the line M1 among the closest ones. In some embodiments, the shortest distance between the center line M2 of the center of the third shielding portion B3 and the closest one of the second portion L2 is different from the center of the fourth shielding portion B4 and the closest one of the second portion L2. The shortest distance of the middle line M2. Thereby, the third spacer PS3 and the fourth spacer PS4 can be made less likely to deviate from the range of the third shielding portion B3 and the fourth shielding portion B4. In this embodiment, the center of the third shielding portion B3 overlaps the center of the third spacer PS3 in the direction P1 perpendicular to the first substrate SB1, and the center of the fourth shielding portion B4 is perpendicular to the direction P1 of the first substrate SB1 The upper overlap is at the center of the fourth spacer PS4.

Please refer to FIGS. 1C, 1E, 1F, and 1G at the same time. In this embodiment, the shapes of the first spacer PS1, the second spacer PS2, the third spacer PS3, and the fourth spacer PS4 are circular, and the center CP1 , The center CP2, the center CP3, and the center CP4 are respectively located at the centers of the first spacer PS1, the second spacer PS2, the third spacer PS3, and the fourth spacer PS4, but the present invention is not limited thereto. In other embodiments, the shapes of the first spacer PS1, the second spacer PS2, the third spacer PS3, and the fourth spacer PS4 are elliptical polygons or other shapes, and the center CP1, the center CP2, the center CP3, and the center CP4 is located at the multiple centers of the first spacer PS1, the second spacer PS2, the third spacer PS3, and the fourth spacer PS4, respectively.

In this embodiment, there is a reference point RP between the source S and the drain D of each active device T. In the direction P1 perpendicular to the first substrate SB1, the center CP1 of the first spacer PS1 is located at the lower left of the reference point RP of one of the active devices T, and the center CP1 of the first spacer PS1 is in the active device T The distance between the reference points RP of one of them is Z1. In the direction P1 perpendicular to the first substrate SB1, the center CP2 of the second spacer PS2 is located at the upper left of the reference point RP of the other one of the active devices T, and the center CP2 of the second spacer PS2 and the active device T The distance between the reference points RP of the other of them is Z2. In the direction P1 perpendicular to the first substrate SB1, the center CP3 of the third spacer PS3 is located at the upper right of the reference point RP of the other one of the active devices T, and the center CP3 of the third spacer PS3 and the active device The distance between the reference points RP of the other one in T is Z3. In the direction P1 perpendicular to the first substrate SB1, the center CP4 of the fourth spacer PS4 is located at the lower right of the reference point RP of the other one of the active devices T, and the center CP4 of the fourth spacer PS4 and the active device The distance between the reference points RP of the other one in T is Z4.

In this embodiment, the center CP1, the center CP2, the center CP3, and the center CP4 are respectively offset from the corresponding reference point RP by approximately equal distances, which means that the distances Z1, Z2, Z3, and Z4 are approximately equal, but the present invention Not limited to this. In other embodiments, the center CP1, the center CP2, the center CP3, and the center CP4 are respectively offset from the corresponding reference point RP by different distances.

In some embodiments, the display device further includes a plurality of sub-spacers (not shown) that do not overlap with the active element T in the direction P1 perpendicular to the first substrate SB1, thereby enabling the liquid crystal layer to have a more uniform gap distribution . The secondary spacer, for example, overlaps the first signal line SL in the direction P1 perpendicular to the first substrate SB1, but the invention is not limited to this.

2 is a broken line diagram of a display device according to an embodiment of the present invention, a pair of offset and spacers in the direction perpendicular to the first substrate overlapped area change rate, in which the first substrate and the second substrate are aligned When the grouping is not offset, the vertical axis represents the spacers (for example, including the first to fourth spacers) that overlap the source, drain and second signal lines of the active device in the direction perpendicular to the first substrate The area change rate, the horizontal axis represents the offset of the first substrate and the second substrate.

In FIG. 2, the display device B is, for example, the display device 10 in the embodiment of FIGS. 1A to 1G. The difference between display device A and display device B is: the relative positions of each spacer of display device A and the first part of the black matrix are the same, and the relative positions of each spacer and the second part of the black matrix are the same . In other words, the display device A does not adjust the position of the spacer to improve the display quality caused by the process deviation.

Please refer to FIG. 2, even if the first substrate and the second substrate are offset by a predetermined position in the first direction and the second direction when the first substrate and the second substrate are paired, the spacers of the display device B (for example, the first to fourth spacers) The area of the source electrode, the drain electrode and the second signal line of the active device in the direction perpendicular to the first substrate can still maintain a small change rate. In other words, the display device B has a larger manufacturing margin than the display device A. In this embodiment, the first direction is, for example, the extension direction of scan lines, and the second direction is, for example, the extension direction of data lines.

FIG. 3 is a schematic partial top view of a display device according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 3 uses the element numbers and part of the content of the embodiment of FIG. 1A, wherein the same or similar numbers are used to represent the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, please refer to the foregoing embodiment, which is not repeated here.

3, in the display device 20 of this embodiment, the center CP1' of the first shielding portion B1, the center CP1 of the first spacer PS1, the center CP3' of the third shielding portion B3, and the third spacer PS3 The center CP3 deviates from the center line of the corresponding one or the closest one in the first portion L1 along the first direction D1. The center CP2' of the second shielding portion B2, the center CP2 of the second spacer PS2, the center CP4' of the fourth shielding portion B4, and the center CP4 of the fourth spacer PS4 deviate from the corresponding ones in the first portion L1 along the second direction D2 The midline of one or the closest.

The center CP3' of the third shielding portion B3, the center CP3 of the third spacer PS3, the center CP4' of the fourth shielding portion B4, and the center CP4 of the fourth spacer PS4 deviate from the corresponding in the second portion L2 along the third direction D3. The midline of one or the closest. The center CP1' of the first shielding portion B1, the center CP1 of the first spacer PS1, the center CP2' of the second shielding portion B2, and the center CP2 of the second spacer PS2 deviate from the corresponding in the second portion L2 along the fourth direction D4 The midline of one or the closest.

In this embodiment, the shapes of the first shielding portion B1, the second shielding portion B2, the third shielding portion B3, and the fourth shielding portion B4 are circular, and the center CP1', the center CP2', the center CP3', and the center CP4 are circular. 'Respectively located at the center of the circle of the first shielding portion B1, the second shielding portion B2, the third shielding portion B3, and the fourth shielding portion B4, but the invention is not limited to this. In other embodiments, the shapes of the first shielding portion B1, the second shielding portion B2, the third shielding portion B3, and the fourth shielding portion B4 are oval polygons or other shapes, and the center CP1', the center CP2', and the center CP3 'And the center CP4' are respectively located at the combined centers of the first shielding portion B1, the second shielding portion B2, the third shielding portion B3, and the fourth shielding portion B4.

In this embodiment, the center CP1 of the first spacer PS1, the center CP2 of the second spacer PS2, the center CP3 of the third spacer PS3, and the center CP4 of the fourth spacer PS4 are respectively perpendicular to the first substrate SB1. P1 overlaps with the center CP1' of the first shielding portion B1, the center CP2' of the second shielding portion B2, the center CP3' of the third shielding portion B3, and the center CP4' of the fourth shielding portion B4.

Based on the above, adjusting the deviation direction of the first spacer PS1, the second spacer PS2, the third spacer PS3, and the fourth spacer PS4 with respect to the black matrix can improve the process yield and improve the process deviation resulting in the degradation of display quality The problem.

FIG. 4 is a schematic partial top view of a display device according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 4 uses the element numbers and part of the content of the embodiment of FIG. 1A, wherein the same or similar reference numbers are used to represent the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, please refer to the foregoing embodiment, which is not repeated here.

The main difference between the display device 30 of FIG. 4 and the display device 10 of FIG. 1A is that in the display device 20, the second portion L2 of the black matrix BM is linear.

FIG. 5 is a schematic partial top view of a display device according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 5 uses the element numbers and part of the content of the embodiment of FIG. 1A, wherein the same or similar reference numbers are used to represent the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, please refer to the foregoing embodiment, which is not repeated here.

In the embodiment of FIG. 1A, the source S of the active element T of the display device 10 is substantially U-shaped. In the embodiment of FIG. 5, the source S of the active element T of the display device is substantially in the shape of an l.

FIG. 6 is a schematic partial top view of a display device according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 6 uses the element numbers and part of the content of the embodiment of FIG. 1A, wherein the same or similar reference numbers are used to represent the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, please refer to the foregoing embodiment, which is not repeated here.

In the embodiment of FIG. 6, the source S of the active element T of the display device is substantially L-shaped.

FIG. 7 is a schematic partial top view of a display device according to an embodiment of the invention. It must be noted here that the embodiment of FIG. 7 uses the element numbers and part of the content of the embodiment of FIG. 1A, wherein the same or similar reference numbers are used to represent the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, please refer to the foregoing embodiment, which is not repeated here.

In the embodiment of FIG. 1A, the source S of the active element T of the display device 10 is substantially U-shaped, and the U-shaped opening is substantially perpendicular to the extending direction of the first signal line SL. In the embodiment of FIG. 7, the source S of the active element T of the display device is substantially U-shaped, and the U-shaped opening direction is substantially parallel to the extending direction of the first signal line SL.

FIG. 8A is a schematic partial top view of a display device according to an embodiment of the invention. Fig. 8B is a cross-sectional view taken along the section line bb' of Fig. 8A. FIG. 8C is an enlarged view of some components of the display device of FIG. 8A. FIG. 8D is an enlarged view of some components of the display device of FIG. 8A. FIG. 8E is an enlarged view of some components of the display device of FIG. 8A. FIG. 8F is an enlarged view of some components of the display device of FIG. 8A.

It must be noted here that the embodiment of FIGS. 8A to 8F uses the element numbers and part of the content of the embodiment of FIG. 1A, wherein the same or similar reference numbers are used to represent the same or similar elements, and the same technical content is omitted. Description. For the description of the omitted parts, please refer to the foregoing embodiment, which is not repeated here.

8A and 8B, the display device 40 includes a first substrate SB1, a second substrate SB2, a plurality of first signal lines SL, a plurality of second signal lines DL, a plurality of active devices T, a plurality of pixel electrodes PE , The first common signal line CL1, the second common signal line CL2, the first pad PD1, the second pad PD2, and the common electrode CE. In this embodiment, the display device 40 further includes a black matrix BM, a protective layer PV, a display medium L, a passivation layer BP, a third common signal line CL3, a fourth common signal line CL4, a third pad PD3, and a fourth pad Pad PD4, first spacer PS1, second spacer PS2, third spacer PS3, and fourth spacer PS4.

The first signal line SL and the second signal line DL are located on the first substrate SB1 and extend along the first extension direction E1 and the second extension direction E2, respectively. Each active device T is electrically connected to a corresponding one of the first signal line SL and a corresponding one of the second signal line DL. The pixel electrodes PE are electrically connected to the active element T.

The first common signal line CL1, the second common signal line CL2, the third common signal line CL3, and the fourth common signal line CL4 are located on the first substrate SB1. The first pad PD1, the second pad PD2, the third pad PD3, and the fourth pad PD4 are respectively connected to the first common signal line CL1, the second common signal line CL2, the third common signal line CL3, and the fourth common signal Line CL4.

The common electrode CE overlaps the pixel electrode PE in a direction P1 perpendicular to the first substrate SB1, and a passivation layer BP is sandwiched between the common electrode CE and the pixel electrode PE. The common electrode CE is electrically connected to the first pad PD1 through the first through hole TH1. The common electrode CE is electrically connected to the second pad PD2 through the second through hole TH2. The common electrode CE is electrically connected to the third pad PD3 through the third through hole TH3. The common electrode CE is electrically connected to the fourth pad PD4 through the fourth through hole TH4.

Referring to FIG. 8C, the center HCP1 of the first via TH1 deviates from the center PCP1 of the first pad PD1 along the first offset direction DR1. Referring to FIG. 8D, the center HCP2 of the second via TH2 deviates from the center PCP2 of the second pad PD2 along the second offset direction DR2. Referring to FIG. 8E, the center HCP3 of the third via TH3 deviates from the center PCP3 of the third pad PD3 along the first offset direction DR1. The center HCP4 of the fourth via TH4 deviates from the center PCP4 of the fourth pad PD4 along the second offset direction DR2. Since the center HCP1 of the first via hole TH1 deviates from the center PCP1 of the first pad PD1 along the first offset direction DR1 and the center HCP2 of the second via hole TH2 deviates from the center of the second pad PD2 along the second offset direction DR2 Even if the center PCP2 is offset during the process of forming the first through hole TH1 and the second through hole TH2, the common electrode CE can still be electrically connected to the first common signal line CL1 and/or the second common signal line CL2 . In other words, the first through hole TH1 and the second through hole TH2 have a larger manufacturing margin. For example, even if the process of forming the first via TH1 and the second via TH2 is offset along the second offset direction DR2, the second via TH2 does not overlap with the direction P1 perpendicular to the first substrate SB1 The second pad PD2 and the first via TH1 can still overlap the first pad PD1 in the direction P1 perpendicular to the first substrate SB1.

The first through hole TH1, the second through hole TH2, the third through hole TH3, and the fourth through hole TH4, for example, penetrate the gate insulating layer GI, the protective layer PV and the passivation layer BP, but the invention is not limited thereto. The film layers penetrated by the first through hole TH1, the second through hole TH2, the third through hole TH3, and the fourth through hole TH4 can be adjusted according to actual requirements.

In this embodiment, the first offset direction DR1 is opposite to the second offset direction DR2, but the invention is not limited to this. The angle between the first offset direction DR1 and the second offset direction DR2 can be changed according to actual requirements.

In this embodiment, the first shielding portion B1 of the black matrix BM overlaps the first pad PD1 and the first spacer PS1 in the direction P1 perpendicular to the first substrate SB1, and the second shielding portion B2 is perpendicular to the first substrate SB1. The direction P1 overlaps the second pad PD2 and the second spacer PS2, the third shielding portion B3 overlaps the third pad PD3 and the third spacer PS3 in the direction P1 perpendicular to the first substrate SB1, and the fourth shield The portion B4 overlaps the fourth pad PD4 and the fourth spacer PS4 in the direction P1 perpendicular to the first substrate SB1. The shielding portion of the shielding spacer is used to shield the pads. Therefore, there is no need to additionally form other protruding structures outside the first portion L1 of the black matrix BM to shield the pads, and the aperture ratio of the display device 40 can be improved.

In this embodiment, at least part of the first spacer PS1, the second spacer PS2, the third spacer PS3, and the fourth spacer PS4 overlap the corresponding active element T in the direction P1 perpendicular to the first substrate SB1. The source S and drain D.

Please refer to FIGS. 8C, 8D, 8E, and 8F at the same time. In this embodiment, the shapes of the first through hole TH1, the second through hole TH2, the third through hole TH3, and the fourth through hole TH4 are circular, and the center HCP1 , The center HCP2, the center HCP3, and the center HCP4 are respectively located at the centers of the first through hole TH1, the second through hole TH2, the third through hole TH3, and the fourth through hole TH4, but the invention is not limited thereto. In other embodiments, the shapes of the first via TH1, the second via TH2, the third via TH3, and the fourth via TH4 are elliptical polygons or other shapes, and the center HCP1, the center HCP2, the center HCP3, and the center The HCP4 is respectively located at the combined center of the first through hole TH1, the second through hole TH2, the third through hole TH3, and the fourth through hole TH4.

In this embodiment, the shapes of the first pad PD1, the second pad PD2, the third pad PD3, and the fourth pad PD4 are rectangular, and the center PCP1, the center PCP2, the center PCP3, and the center PCP4 are respectively located in the first pad. The geometric center where the diagonals of the pad PD1, the second pad PD2, the third pad PD3, and the fourth pad PD4 intersect, but the invention is not limited to this. In other embodiments, the shapes of the first pad PD1, the second pad PD2, the third pad PD3, and the fourth pad PD4 are circular, elliptical polygonal or other shapes, and the center PCP1, the center PCP2, and the center The PCP3 and the center PCP4 are respectively located at the center of the first pad PD1, the second pad PD2, the third pad PD3, and the fourth pad PD4.

FIG. 9A is an enlarged view of some components of a display device according to an embodiment of the invention. FIG. 9B is an enlarged view of some components of a display device according to an embodiment of the present invention. FIG. 9C is an enlarged view of some components of a display device according to an embodiment of the present invention. FIG. 9D is an enlarged view of some components of a display device according to an embodiment of the invention. It must be noted here that the embodiment of FIGS. 9A to 9D follows the element numbers and part of the content of the embodiment of FIGS. 8A to 8F, wherein the same or similar numbers are used to denote the same or similar elements, and the same is omitted. Description of technical content. For the description of the omitted parts, please refer to the foregoing embodiment, which is not repeated here. 9A to 9D are partial enlarged views of different areas in the display device 50.

Referring to FIGS. 9A to 9D, the black matrix BM of the display device 50 includes a plurality of first portions L1, a plurality of second portions L2, a first shielding portion B1, a second shielding portion B2, a third shielding portion B3, and a fourth shielding部B4.

The first spacer PS1 overlaps the source S and the drain D of one of the active devices T in a direction P1 perpendicular to the first substrate SB1. The second spacer PS2 overlaps the source S and the drain D of the other one of the active devices T in a direction P1 perpendicular to the first substrate SB1. In this embodiment, the shortest distance Y1 of the line M1 between the center CP1 of the first spacer PS1 and the closest one of the first part L1 is different from the center CP2 of the second spacer PS2 and the closest one of the first part L1 One is the shortest distance Y2 of the line M1.

In this embodiment, in the horizontal direction (the extension direction of the center line M1), the first spacer PS1 is closer to the first via hole TH1 than the reference point RP. In the vertical direction (the extension direction of the center line M2), the direction in which the first spacer PS1 deviates from the reference point RP is substantially the same as the direction in which the first via hole TH1 deviates from the center PCP1 (for example, both are downward in FIG. 9A direction).

In this embodiment, in the horizontal direction (the extension direction of the center line M1), the second spacer PS2 is closer to the second via hole TH2 than the reference point RP. In the vertical direction (the extension direction of the center line M2), the direction in which the second spacer PS2 deviates from the reference point RP is substantially the same as the direction in which the second via hole TH2 deviates from the center PCP2 (for example, both are the upward direction in FIG. 9B ).

The third spacer PS3 overlaps the source S and the drain D of another one of the active devices T in a direction P1 perpendicular to the first substrate SB1. The fourth spacer PS4 overlaps the source S and the drain D of the other one of the active devices T in a direction P1 perpendicular to the first substrate SB1. In this embodiment, the shortest distance Y3 of the line M1 between the center CP3 of the third spacer PS3 and the closest one of the first part L1 is different from the center CP4 of the fourth spacer PS4 and the closest one of the first part L1 One is the shortest distance Y4 of the middle line M1.

In this embodiment, in the horizontal direction (the extension direction of the center line M1), the third spacer PS3 is closer to the third via hole TH3 than the reference point RP. In the vertical direction (the extension direction of the center line M2), the direction in which the third spacer PS3 deviates from the reference point RP is substantially the same as the direction in which the third via hole TH3 deviates from the center PCP3 (for example, both are the upward direction in FIG. 9C ).

In this embodiment, in the horizontal direction (the extension direction of the center line M1), the fourth spacer PS4 is closer to the fourth via hole TH4 than the reference point RP. In the vertical direction (the extension direction of the center line M2), the direction in which the fourth spacer PS4 deviates from the reference point RP is substantially the same as the direction in which the fourth via hole TH4 deviates from the center PCP4 (for example, both are downward in FIG. 9D direction).

In summary, the shortest distance between the center of the first spacer and the center line of the closest one in the first part is different from the shortest distance between the center of the second spacer and the center line of the closest one in the first part . Thereby, the first spacer overlaps the area of the corresponding drain and source in the direction perpendicular to the first substrate, and the second spacer overlaps the area of the corresponding drain and source in the direction perpendicular to the first substrate. The sum is not easily affected by the offset between the first substrate and the second substrate in the assembly process.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to those defined by the attached patent scope.

10, 20, 30, 40, 50: display device B1: The first shielding part B2: The second shielding part B3: The third shielding part B4: The fourth shielding part BM: black matrix BP: Passivation layer C1: Red filter element C2: Green filter element C3: Blue filter element CE: Common electrode CL; shared signal line CL1; the first common signal line CL2; the second common signal line CL3; the third common signal line CL4; the fourth common signal line CH: Channel layer CP1~CP4, CP1’~CP4’, HCP1~HCP4, PCP1~PCP4: Center D: Dip pole D1: First direction D2: second direction D3: Third party D4: Fourth direction DL: second signal line DR1: first offset direction DR2: second offset direction E1: The first extension direction E2: second extension direction G: Gate GI: Gate insulating layer H1: Contact window L: display medium L1: Part One L2: Part Two M1, M2: midline P1: direction PD: pad PD1: The first pad PD2: second pad PD3: third pad PD4: fourth pad PE: pixel electrode PS1: The first spacer PS2: The second spacer PS3: The third spacer PS4: The fourth spacer PV: protective layer RP: reference point S: Source SB1: The first substrate SB2: Second substrate SL: The first signal line T: Active component TH: Via TH1: The first via TH2: second via TH3: The third via TH4: Fourth via X1, X2, X3, X4, Y1, Y2, Y3, Y4, Z1, Z2, Z3, Z4: distance

FIG. 1A is a schematic partial top view of a display device according to an embodiment of the invention. FIG. 1B is an enlarged view of some components of the display device of FIG. 1A. FIG. 1C is a partial enlarged view of the display device of FIG. 1B. Fig. 1D is a cross-sectional view taken along the section line aa' of Fig. 1B. FIG. 1E is an enlarged view of some components of the display device of FIG. 1A. FIG. 1F is an enlarged view of some components of the display device of FIG. 1A. FIG. 1G is an enlarged view of some components of the display device of FIG. 1A. FIG. 2 is a broken line diagram of a pair-group offset and a change rate of overlapped area of spacers of a display device according to an embodiment of the present invention. FIG. 3 is a schematic partial top view of a display device according to an embodiment of the invention. FIG. 4 is a schematic partial top view of a display device according to an embodiment of the invention. FIG. 5 is a schematic partial top view of a display device according to an embodiment of the invention. FIG. 6 is a schematic partial top view of a display device according to an embodiment of the invention. FIG. 7 is a schematic partial top view of a display device according to an embodiment of the invention. FIG. 8A is a schematic partial top view of a display device according to an embodiment of the invention. Fig. 8B is a cross-sectional view taken along the section line bb' of Fig. 8A. FIG. 8C is an enlarged view of some components of the display device of FIG. 8A. FIG. 8D is an enlarged view of some components of the display device of FIG. 8A. FIG. 8E is an enlarged view of some components of the display device of FIG. 8A. FIG. 8F is an enlarged view of some components of the display device of FIG. 8A. FIG. 9A is an enlarged view of some components of a display device according to an embodiment of the invention. FIG. 9B is an enlarged view of some components of a display device according to an embodiment of the present invention. FIG. 9C is an enlarged view of some components of a display device according to an embodiment of the present invention. FIG. 9D is an enlarged view of some components of a display device according to an embodiment of the invention.

B1: The first shielding part BM: black matrix CP1, CP1’: Center CH: Channel layer D: Dip pole DL: second signal line G: Gate L1: Part One L2: Part Two M1, M2: midline P1: direction PS1: The first spacer RP: reference point S: Source SL: The first signal line T: Active component X1, Y1, Z1: distance

Claims (20)

A display device includes: a first substrate; a plurality of first signal lines and a plurality of second signal lines, which are located on the first substrate and extend along a first extension direction and a second extension direction; and Active devices, wherein each active device is electrically connected to a corresponding one of the first signal lines and a corresponding one of the second signal lines; a plurality of pixel electrodes are electrically connected to the active Components; a second substrate facing the first substrate; a black matrix, located on the second substrate, and comprising: a plurality of first portions extending along the first extension direction and perpendicular to the first substrate One direction overlaps the first signal lines, and the middle line of each first part extends substantially along the corresponding first signal line; and a plurality of second parts extend along the second extension direction, and The direction perpendicular to the first substrate overlaps the second signal lines, and the middle line of each second portion extends substantially along the corresponding second signal line; a first spacer is perpendicular to the first The direction of a substrate overlaps the source and drain of one of the active devices; a second spacer overlaps the other of the active devices in the direction perpendicular to the first substrate One of the source and drain, wherein the shortest distance between the center of the first spacer and the middle line of the closest one of the first parts is different from the center of the second spacer and the lowest of the first parts Shortest distance of the midline And a plurality of sub-spacers, overlapping the first signal lines in a direction perpendicular to the first substrate. The display device described in claim 1 further includes: a third spacer that overlaps the source and drain of another one of the active elements in the direction perpendicular to the first substrate And a fourth spacer, which overlaps the source and drain of the other one of the active devices in the direction perpendicular to the first substrate, wherein the center of the third spacer and the The shortest distance between the center line of the closest one of the second parts is different from the shortest distance between the center of the fourth spacer and the center line of the closest one of the second parts. The display device according to claim 2, wherein there is a reference point between the source and the drain of each active element, and in the direction perpendicular to the first substrate, the center of the first spacer Located at the lower left of the reference point of the one of the active elements, the center of the second spacer is located at the upper left of the reference point of the other of the active elements, the third gap The center of the object is located at the upper right of the reference point of the other of the active elements, and the center of the fourth spacer is located at the reference point of the other of the active elements Bottom right. The display device according to the first item of the scope of patent application, wherein the center line of each second part or the center line of each first part is zigzag. The display device described in item 1 of the scope of patent application further includes: a plurality of blue filter elements, a plurality of green filter elements, and a plurality of red filter elements, located between the first substrate and the second substrate , Wherein the shortest distance between the first spacer and the blue filter elements is smaller than the shortest distance between the first spacer and the green filter elements or the red filter elements, and the second The shortest distance between the spacer and the blue filter elements is smaller than the shortest distance between the second spacer and the green filter elements or the red filter elements. According to the display device described in claim 1, wherein the black matrix further includes: a first shielding portion, the first shielding portion overlaps the first spacer, wherein the center of the first shielding portion is along a The first direction deviates from the center line of the corresponding one of the first parts; and a second shielding portion overlapping the second spacer, wherein the center of the second shielding portion is along a second The direction deviates from the center line of the corresponding one of the first parts. According to the display device described in claim 6, wherein the center of the first shielding portion overlaps with the center of the first spacer, and the center of the second shielding portion overlaps with the center of the second spacer. The display device described in item 1 of the scope of patent application further includes: a first common signal line and a second common signal line located on the first substrate On; a first pad and a second pad, respectively connected to the first common signal line and the second common signal line; and a common electrode overlapping the pixel electrodes, wherein the common electrode through a first A via hole is electrically connected to the first pad, the common electrode is electrically connected to the second pad through a second via hole, wherein the center of the first via hole deviates from the first pad along a first offset direction The center of the pad, and the center of the second via hole deviates from the center of the second pad along a second offset direction. According to the display device described in item 8 of the scope of patent application, the first offset direction is opposite to the second offset direction. According to the display device of claim 8, wherein the black matrix further includes: a first shielding portion overlapping the first pad and the first spacer in the direction perpendicular to the first substrate; And a second shielding portion overlapping the second pad and the second spacer in the direction perpendicular to the first substrate. The display device as described in item 10 of the scope of the patent application further includes: a plurality of blue filter elements, a plurality of green filter elements, and a plurality of red filter elements, located between the first substrate and the second substrate , Wherein the shortest distance between the first shielding portion and the blue filter elements is smaller than the shortest distance between the first shielding portion and the green filter elements or the red filter elements, and the second The shortest distance between the shielding portion and the blue filter elements is smaller than the second shielding portion and the green filters The shortest distance between the filter elements or the red filter elements. A display device includes: a first substrate; a plurality of first signal lines and a plurality of second signal lines, which are located on the first substrate and extend along a first extension direction and a second extension direction; and Active devices, wherein each active device is electrically connected to a corresponding one of the first signal lines and a corresponding one of the second signal lines; a plurality of pixel electrodes are electrically connected to the active Components; a first common signal line and a second common signal line located on the first substrate; a first pad and a second pad, respectively connected to the first common signal line and the second common signal line ; A common electrode overlapping the pixel electrodes, wherein the common electrode is electrically connected to the first pad through a first through hole, and the common electrode is electrically connected to the second pad through a second through hole, Wherein the center of the first via hole deviates from the center of the first pad along a first offset direction, and the center of the second via hole deviates from the center of the second pad along a second offset direction; And a second substrate facing the first substrate. According to the display device described in item 12 of the scope of patent application, the first offset direction is opposite to the second offset direction. The display device described in item 12 of the scope of patent application further includes: a black matrix located on the second substrate, and includes: A plurality of first parts extend along the first extension direction and overlap the first signal lines, and the middle line of each first part extends substantially along the corresponding first signal line; a plurality of second parts , Extending along the second extension direction and overlapping the second signal lines, and the middle line of each second part extends substantially along the corresponding second signal line; and a first spacer, overlapping The source and drain of one of the active devices. The display device described in claim 14 further includes: a second spacer overlapping the source and drain of another one of the active elements, wherein the center of the first spacer is The shortest distance of the center line of the closest one of the first parts is different from the shortest distance between the center of the second spacer and the center line of the closest one of the first parts. The display device described in claim 15 further includes: a third spacer that overlaps the source and drain of another one of the active elements; and a fourth spacer that overlaps The source and drain of another one of the active elements, wherein the shortest distance between the center of the third spacer and the middle line of the closest one of the second parts is different from the fourth The shortest distance between the center of the spacer and the middle line of the closest one of the second parts. According to the display device described in item 14 of the scope of patent application, the center line of each second part or the center line of each first part is zigzag. The display device according to item 14 of the scope of patent application, further includes: a plurality of blue filter elements, a plurality of green filter elements, and a plurality of red filter elements, located between the first substrate and the second substrate , Wherein the shortest distance between the first spacer and the blue filter elements is smaller than the shortest distance between the first spacer and the green filter elements or the red filter elements. According to the display device of claim 15, wherein the black matrix further comprises: a first shielding portion, the first shielding portion overlaps the first spacer, and the center of the first shielding portion is along a The first direction deviates from the center line of the corresponding one of the first parts; and a second shielding portion overlapping the second spacer, wherein the center of the second shielding portion is along a second The direction deviates from the center line of the corresponding one of the first parts. According to the display device of claim 14, wherein the black matrix further includes: a first shielding portion overlapping the first pad and the first spacer; and a second shielding portion overlapping the The second pad.

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