CN113126377A

CN113126377A - Display device and display device driving method

Info

Publication number: CN113126377A
Application number: CN202110422117.9A
Authority: CN
Inventors: 邱峰青; 王鹏飞; 钟德镇
Original assignee: InfoVision Optoelectronics Kunshan Co Ltd
Current assignee: InfoVision Optoelectronics Kunshan Co Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-07-16
Anticipated expiration: 2041-04-20
Also published as: CN113126377B

Abstract

The invention provides a display device and a display device driving method, wherein the display device comprises a display panel, a dimming panel and a backlight module which are overlapped, the display panel comprises a first array substrate, and a first scanning line extending along a first direction and a first data line extending along a second direction are arranged on the first array substrate; the dimming panel comprises a second array substrate, the second array substrate comprises a plurality of second scanning lines and a plurality of second data lines, each second scanning line is a broken line, each second data line is a broken line, the second scanning lines and the second data lines are intersected to define a plurality of oblique dimming pixel units, and the second scanning lines extending along the first direction are intersected with the second data lines extending along the second direction. In the display device and the driving method of the display device, the second scanning line and the second data line are set to be of the broken line structure, and the dimming pixel unit is set to be of the oblique quadrilateral structure, so that the defects of the Moire fringe of the display device can be eliminated, and the penetration rate is improved.

Description

Display device and display device driving method

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display device and a display device driving method.

Background

In the field of liquid crystal display technology, Liquid Crystal Display (LCD) devices are widely used in tv, notebook computers, mobile phones, personal digital assistants and other products because of their advantages of thin and light profile, low power consumption and no radiation pollution.

The liquid crystal display device comprises a backlight module and a liquid crystal panel, wherein the backlight module is arranged on the non-display side of the liquid crystal panel and provides a light source for the liquid crystal panel. The liquid crystal panel includes an array substrate, a color filter substrate, and a liquid crystal layer formed between the array substrate and the color filter substrate. At present, to achieve better display effect, a local dimming (local dimming) is usually required, and the prior art generally implements the local dimming by directly adjusting the light intensity of different regions of the backlight module. However, the direct control of the backlight module for dimming has certain difficulties in algorithm, and new technologies need to be developed to solve the problem.

To implement the zone dimming, it can also be implemented by a dual panel (dual cell). As shown in fig. 1, the liquid crystal display device includes a display panel 91, a dimming panel 93 and a backlight module 95, the dimming panel 93 is disposed between the display panel 91 and the backlight module 95, and the amount of light transmitted through different regions can be realized by controlling the standing angles of the liquid crystal corresponding to the different regions of the dimming panel 93, so as to realize the divisional dimming. However, the pixel structures of the display panel and the dimming panel of the liquid crystal display device with such a structure are both in a matrix arrangement, and have moire (moire) fringes, so that the display effect is poor.

Disclosure of Invention

The invention provides a display device and a display device driving method capable of solving Moire fringe problem.

The invention provides a display device, which comprises a display panel, a dimming panel and a backlight module which are stacked, wherein the dimming panel is configured to adjust the intensity of light rays emitted by the backlight module;

the display panel comprises a first array substrate, wherein a first scanning line extending along a first direction and a first data line extending along a second direction are further arranged on the first array substrate, and a plurality of display pixel units are defined by the intersection of the first scanning lines and the first data lines;

the dimming panel comprises a second array substrate, the second array substrate comprises a plurality of second scanning lines and a plurality of second data lines, each second scanning line is a broken line, each second data line is a broken line, two adjacent second scanning lines and two adjacent second data lines intersect to define a plurality of oblique dimming pixel units, and the second scanning lines extend along the first direction and the second data lines extend along the second direction and intersect.

In one embodiment, the second scan line includes a plurality of first traces and a plurality of second traces, the first traces and the second traces are alternately arranged along the second direction, and two adjacent first traces and two adjacent second traces are arranged in a transverse axial symmetry;

the second data line comprises a plurality of third wires and a plurality of fourth wires, the third wires and the fourth wires are alternately arranged along the first direction, and two adjacent third wires and fourth wires are symmetrically arranged in a longitudinal axis.

In one embodiment, the first trace includes a plurality of first line segments and a plurality of second line segments, the plurality of first line segments and the plurality of second line segments are alternately arranged along the first direction, and two adjacent first line segments and two adjacent second line segments are vertically connected with each other;

the second routing comprises a plurality of third line segments and a plurality of fourth line segments, the plurality of third line segments and the plurality of fourth line segments are alternately arranged along the first direction, and two adjacent third line segments and two adjacent fourth line segments are vertically connected with each other;

the third routing comprises a plurality of fifth line segments and a plurality of sixth line segments, the plurality of fifth line segments and the plurality of sixth line segments are alternately arranged along the second direction, and the adjacent fifth line segments and the adjacent sixth line segments are vertically connected with each other;

the fourth wire comprises a plurality of seventh wire segments and a plurality of eighth wire segments, the seventh wire segments and the eighth wire segments are alternately arranged along the second direction, and the adjacent seventh wire segments and the eighth wire segments are vertically connected with each other.

In one embodiment, a joint of the first line segment and the second line segment near one end of the second line is adjacent to a joint of the third line segment and the fourth line segment near one end of the first line, and a gap is left between the first line segment and the second line segment;

the joint of the fifth line segment and the sixth line segment, which is close to one end of the fourth wire, is adjacent to the joint of the seventh line segment and the eighth line segment, which is close to one end of the third wire, and a gap is reserved between the fifth line segment and the eighth line segment, the fifth line segment and the sixth line segment are connected through a third connecting portion, the seventh line segment and the eighth line segment are connected through a fourth connecting portion, and the third connecting portion and the fourth connecting portion are arranged at intervals.

In one embodiment, the lengths of the first line segment, the second line segment, the third line segment, the fourth line segment, the fifth line segment, the sixth line segment, the seventh line segment and the eighth line segment are equal, and the intersection point of the second scan line and the second data line is located at the midpoint of each line segment.

In one embodiment, the oblique dimming pixel cell defined by the intersection of the second scan line and the second data line includes two adjacent quadrilateral structures.

In one embodiment, each of the dimming pixel units has a second pixel electrode and a second switching element; or, each dimming pixel unit is provided with one second pixel electrode and two second switching elements.

In one embodiment, at least a portion of the first scan line passes through an intersection of the second scan line and the second data line, and at least a portion of the first data line passes through an intersection of the second scan line and the second data line.

In one embodiment, the display panel further includes a first upper substrate and a first liquid crystal layer disposed between the first upper substrate and the first array substrate, and a first pixel electrode is disposed in the display pixel unit;

the dimming panel further comprises a second upper substrate and a second liquid crystal layer arranged between the second upper substrate and the second array substrate, and a second pixel electrode is arranged in the dimming pixel unit;

the second upper substrate includes a third substrate and an upper electrode closer to the second liquid crystal layer than the third substrate; the second array substrate comprises a fourth substrate and a second pixel electrode, and the second pixel electrode is closer to the second liquid crystal layer than the fourth substrate;

in a refresh period T of the display device, the upper electrode is used for receiving direct-current voltage in a time period T2, and the display device realizes a display function; and receiving an alternating-current voltage with a waveform of a pulse square wave with the amplitude of V1 in a time period T1, and realizing the pressure touch function by the display device, wherein T is T1+ T2.

The invention also discloses a display device driving method, which is used for driving the display device and comprises the following steps: in one refresh period T of the display device, applying direct current voltage to the upper electrode (3024) in a time period T2, and realizing a display function by the display device; and applying an alternating-current voltage of a pulse square wave with the waveform amplitude of V1 in a time period of T1, and realizing the pressure touch function by the display device, wherein T is T1+ T2.

In the display device and the driving method of the display device, the second scanning line and the second data line are set to be of the broken line structure, and the dimming pixel unit is set to be of the oblique quadrilateral structure, so that the poor Moire fringe of the display device can be eliminated, and the penetration rate is improved.

Drawings

Fig. 1 is a schematic diagram of a conventional display device.

Fig. 2 is a schematic diagram of a display device according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of the display device shown in fig. 2.

Fig. 4 is a schematic layout view of second data lines and second scan lines of a second array substrate of a dimming panel of the display device shown in fig. 3.

Fig. 5 is a schematic structural diagram of adjacent second scan lines in fig. 4.

Fig. 6 is a schematic structural diagram of the adjacent second data line in fig. 4.

Fig. 7 is a schematic layout view of a first scan line and a first data line of a display panel and a second scan line and a second data line of a dimming panel of the display device shown in fig. 3.

Fig. 8 is a schematic distribution diagram of pixel units of the array substrate of the dimming panel of the display device shown in fig. 3.

Fig. 9 is a schematic distribution diagram of pixel units of another embodiment of the array substrate of the dimming panel of the display device shown in fig. 3.

Fig. 10 is a schematic distribution diagram of pixel units of the array substrate of the dimming panel of the display device shown in fig. 3 according to still another embodiment.

Fig. 11 is a schematic view of the structure of a display device according to another embodiment of the present invention.

Fig. 12 is a driving waveform diagram of a dimming panel of the display device shown in fig. 11.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 2, the display device according to an embodiment of the invention includes a display panel 10, a dimming panel 30 and a backlight module 50 stacked together, wherein the dimming panel 30 is disposed between the display panel 10 and the backlight module 50. The dimming panel 30 is configured to adjust the intensity of light emitted from the backlight assembly 50. In the present embodiment, the display panel 10 may be an IPS (In-Plane Switching) type display panel or an FFS (Fringe Field Switching) type display panel, and the dimming panel 30 may be a TN type panel. Generally, the resolution of the display panel 10 is higher than that of the dimming panel 30. It is understood that the display panel 10 may also be a TN type display panel, and the dimming panel 30 may also be an FFS type structure or an IPS type structure, which is not limited herein. It is understood that, in another embodiment, the display panel 10 may also be disposed between the dimming panel 30 and the backlight module 50, that is, the positions of the display panel 10 and the dimming panel 30 may be interchanged.

Referring to fig. 3, in the present embodiment, the display panel 10 includes a first upper substrate 102, a first array substrate 104, and a first liquid crystal layer 106 disposed between the first upper substrate 102 and the first array substrate 104.

The first upper substrate 102 includes a first substrate 1022 and a color-resist layer 1024, and the color-resist layer 1024 is disposed on a side of the first substrate 1022 close to the first liquid crystal layer 106. The first substrate 1022 may be a glass substrate or a plastic substrate. The first upper substrate 102 is further provided with a first light shielding structure 1026, the first light shielding structure 1026 may be a black matrix, the color resistance layer 1024 includes a plurality of color resistors, and the first light shielding structure 1026 is disposed between adjacent color resistors.

The first array substrate 104 includes a second substrate 1042, a first common electrode 1044 and a first pixel electrode 1046, the first common electrode 1044 and the first pixel electrode 1046 are disposed above the second substrate 1042, and the first common electrode 1044 and the first pixel electrode 1046 are disposed in an insulating and spaced manner. The second substrate 1042 is further provided with a plurality of first switch elements 1048. The first array substrate 104 further has a first scan line (not shown) extending along a first direction and a first data line (not shown) extending along a second direction, the plurality of first scan lines 108 (see fig. 7) and the plurality of first data lines 110 (see fig. 7) intersect to define a plurality of display pixel units, and each display pixel unit has a first switch element 1048. In the embodiment, the first scan line 108 extends along the transverse direction, and the first data line 110 extends along the longitudinal direction, that is, the first scan line 108 is perpendicular to the first data line 110, it can be understood that the first data line 110 may also be inclined at a small angle with respect to the longitudinal direction, for example, but not limited to, being inclined at 3 ° to 10 °. The first switch element 1048 may be specifically a thin film transistor, and includes a gate electrode, a drain electrode, a source electrode, and a semiconductor layer, the gate electrode is disposed on the second substrate 1042, a gate insulating layer covers a region of the gate electrode and the second substrate 1042 where the gate electrode is not disposed, the semiconductor layer is disposed on the gate insulating layer, the source electrode and the drain electrode are disposed at an interval, the source electrode and the drain electrode are respectively in contact with the semiconductor layer, the drain electrode is electrically connected to the first pixel electrode 1046, the gate electrode is electrically connected to the first scan line, and the source electrode is electrically connected to the first data line. In this embodiment, a first insulating layer and a protective layer are sequentially disposed above the first switch element 1048, a first common electrode 1044 is disposed on the protective layer, a second insulating layer is disposed above the first common electrode 1044, and a first pixel electrode 1046 is disposed above the second insulating layer. It is understood that the positions of the first common electrode 1044 and the first pixel electrode 1046 can be interchanged.

In this embodiment, the dimming panel 30 includes a second upper substrate 302, a second array substrate 304, and a second liquid crystal layer 306 disposed between the second upper substrate 302 and the second array substrate 304.

Referring to fig. 4, a plurality of second scan lines 308 and a plurality of second data lines 310 are disposed on the second array substrate 304, and two adjacent second scan lines 308 and two adjacent second data lines 310 intersect to define a plurality of oblique dimming pixel units P. Each second scan line 308 is a polyline, and each second data line 310 is a polyline. The plurality of second scan lines 308 extending along the first direction perpendicularly intersect the plurality of second data lines 310 extending along the second direction. The first direction herein refers to an extending direction (i.e., a lateral direction) along a long side of the dimming panel 30, and the second direction herein refers to an extending direction (i.e., a longitudinal direction) along a short side of the dimming panel 30, the first direction and the second direction being perpendicular to each other.

The second scan line 308 includes a plurality of first traces 3082 (shown as dotted lines in fig. 4) and a plurality of second traces 3084 (shown as dotted lines in fig. 4), the first traces 3082 and the second traces 3084 are alternately disposed along the second direction, that is, one first trace 3082 is disposed on every other second trace 3084, and two adjacent first traces 3082 and second traces 3084 are axisymmetrically disposed with a transverse axis L1, that is, the first traces 3082 and the second traces 3084 are mirror images along the transverse direction, so that the first traces 3082 and the second traces 3084 both extend from the left side to the right side of the dimming panel 30. The first routing line 3082 includes a plurality of first line segments 3085 and a plurality of second line segments 3086, the plurality of first line segments 3085 and the plurality of second line segments 3086 are alternately arranged along the first direction, and adjacent first line segments 3085 and second line segments 3086 are vertically connected to each other. The second trace 3084 includes a plurality of third wire segments 3087 and a plurality of fourth wire segments 3088, the plurality of third wire segments 3087 and the plurality of fourth wire segments 3088 are alternately arranged along the first direction, and adjacent third wire segments 3087 and fourth wire segments 3088 are vertically connected to each other. Referring to fig. 5, a connection portion of the first line segment 3085 and the second line segment 3086 near one end of the second line segment 3084 is adjacent to and spaced apart from a connection portion of the third line segment 3087 and the fourth line segment 3088 near one end of the first line segment 3082. Specifically, the first line segment 3085 and the second line segment 3086 are connected by a first connection part 3090, the third line segment 3087 and the fourth line segment 3088 are connected by a second connection part 3091, and the first connection part 3090 and the second connection part 3091 are arranged in parallel at intervals. The second scan lines 308 are respectively connected to the gate driving unit 3093.

The second data line 310 includes a plurality of third traces 3102 (thin solid lines in fig. 4) and a plurality of fourth traces 3104 (thick solid lines in fig. 4), the third traces 3102 and the fourth traces 3104 are alternately arranged along the first direction, that is, one third trace 3102 is arranged on every other fourth trace 3104, and two adjacent third traces 3102 and fourth traces 3104 are axially symmetrically arranged along the longitudinal axis L2, that is, the third traces 3102 and the fourth traces 3104 are mirror images, so that the third traces 3102 and the second traces 3104 both extend from the upper side to the lower side of the dimming panel 30. The third routing 3102 includes a plurality of fifth line segments 3105 and a plurality of sixth line segments 3106, the plurality of fifth line segments 3105 and the plurality of sixth line segments 3106 are alternately arranged along the second direction, and the adjacent fifth line segments 3105 and sixth line segments 3106 are vertically connected to each other. The fourth trace 3104 includes a plurality of seventh line segments 3107 and a plurality of eighth line segments 3108, the plurality of seventh line segments 3107 and the plurality of eighth line segments 3108 are alternately arranged along the second direction, and the adjacent seventh line segments 3107 and eighth line segments 3108 are vertically connected to each other. Referring to fig. 6, a connection between the fifth line 3105 and the sixth line 3106 near one end of the fourth wire 3104 is adjacent to a connection between the seventh line 3107 and the eighth line 3108 near one end of the third wire 3102 with a gap. Specifically, the fifth line segment 3105 and the sixth line segment 3106 are connected by a third connection portion 3110, the seventh line segment 3107 and the eighth line segment 3108 are connected by a fourth connection portion 3111, and the third connection portion 3110 and the fourth connection portion 3111 are arranged in parallel at intervals. The second data lines 310 are respectively connected to source driving units (not shown in fig. 4).

The second scan lines 308 and the second data lines 310 intersect to form a plurality of oblique quadrilateral structures. Specifically, the first, second, third, fourth, fifth, sixth, seventh, and

eighth line segments

3085, 3086, 3087, 3088, 3105, 3106, 3107, and 3108 are equal in length, and the intersection of the second scan line 308 and the second data line 310 is located at the midpoint of each line segment. Specifically, in the present embodiment, the first line segment 3085, the second line segment 3086, the third line segment 3087, the fourth line segment 3088, the fifth line segment 3105, the sixth line segment 3106, the seventh line segment 3107 and the eighth line segment 3108 are inclined at an angle of 45 ° with respect to the horizontal direction, and of course, the inclination angle may be other angles.

In this embodiment, referring to fig. 7, the first scan line 108 extends along a transverse direction, and the first data line 110 extends along a longitudinal direction. Specifically, the dimming pixel cell P is a parallelogram rotated counterclockwise by 45 degrees in the first direction, and the display pixel cell is a rectangle parallel to the first direction. Specifically, in the present embodiment, at least a portion of the first scan line 108 passes through an intersection of the second scan line 308 and the second data line 310, and at least a portion of the first data line 110 passes through an intersection of the second scan line 308 and the second data line 310. It is understood that the first scan line 108 may not pass through the intersection of the second scan line 308 and the second data line 310, and the first data line 110 may not pass through the intersection of the second scan line 308 and the second data line 310, even though the dimming display unit P and the display pixel unit may still intersect obliquely, thereby solving the moire problem.

In the present embodiment, the second scan line 308 and the second data line 310 are set as a polygonal line, and the intersection of the second scan line 308 and the second data line 310 forms a plurality of oblique diamond structures, so that the dimming pixel unit P and the display pixel unit can be obliquely intersected, the moire problem of the display device can be reduced or even eliminated, especially the color moire of the display device can be reduced or even eliminated, and even if the resolution of the dimming panel 30 is lower than that of the display panel 10, that is, when one dimming pixel unit P corresponds to a plurality of display pixel units, the moire problem of the display device can be reduced or even eliminated well, and the display effect is better. The second scan line 308 and the second data line 310 are both arranged as a polygonal line, so that the areas of the dimming pixel units P surrounded by the second scan line 308 and the second data line 310 are equal, and thus, the light emission of the display device is more uniform, and the transmittance is improved.

Referring to fig. 8, two adjacent diamond structures defined by the intersection of the second scan line 308 and the second data line 310 form a dimming pixel unit P (indicated by a dashed line in the figure), and by such arrangement, the dimming pixel unit P can cover all the diamond structures without any gap, so that the light emitted from the dimming panel 30 is more uniform, and the display effect is better. In this embodiment, the dimming pixel unit P is inclined by 45 ° in the counterclockwise direction with respect to the first direction. In this embodiment, the second pixel electrode 3044 has a rectangular shape. Referring to fig. 9, in another embodiment, the dimming pixel unit P may also be tilted by 45 ° clockwise with respect to the first direction. In the present embodiment, each dimming pixel unit P is provided with a second pixel electrode 3044 and two second switch elements 3046, wherein the second switch element 3046 may be a thin film transistor, a drain of each thin film transistor is electrically connected to the second pixel electrode 3044, a gate thereof is electrically connected to the second scan line 308, and a source thereof is electrically connected to the second data line 310. Referring to fig. 10, in another embodiment, only one second switch element 3046 may be disposed in each dimming pixel unit P.

Referring to fig. 3 again, the second upper substrate 302 includes a third substrate 3022 and an upper electrode 3024, and the upper electrode 3024 is closer to the second liquid crystal layer 306 than the third substrate 3022. The second upper substrate 302 further includes a second light shielding structure 3026, and the second light shielding structure 3026 is stacked between the third substrate 3022 and the upper electrode 3024. The second light shielding structure 3026 extends corresponding to the extending direction of the second scan line 308 and the second data line 310, and more specifically, the line width of the second light shielding structure 3026 is greater than the line width of the second scan line 308 and the second data line 310, so that the second light shielding structure 3026 covers the second scan line 308 and the second data line 310. In an embodiment, the line width of the second light shielding structure 3026 may be about 4.5 microns, and the line widths of the second scan line 308 and the second data line 310 may be about 3 microns. The second upper substrate 302 further includes a passivation layer 3028 covering the upper electrode 3024, wherein the passivation layer 3028 is disposed on the upper electrode 3024 near the second liquid crystal layer 306.

The second array substrate 304 includes a fourth substrate 3042 and a second pixel electrode 3044, and the second pixel electrode 3044 is closer to the second liquid crystal layer 306 than the fourth substrate 3042. A plurality of second switching elements 3046 are also provided on the fourth substrate 3042. The second switching element 3046 may be specifically a thin film transistor, and includes a gate electrode disposed on the fourth substrate 3042, a gate insulating layer covering the gate electrode and a region of the fourth substrate 3042 where the gate electrode is not disposed, a source electrode, and a semiconductor layer disposed on the gate insulating layer, wherein the source electrode and the drain electrode are spaced apart from each other, and the source electrode and the drain electrode are in contact with the semiconductor layer, respectively.

In this embodiment, the display device further includes a first polarizing plate 60, a second polarizing plate 70 and a third polarizing plate 80, the first polarizing plate 60 is located on a side of the display panel 10 away from the dimming panel 30, the second polarizing plate 70 is located between the display panel 10 and the dimming panel 30, and the third polarizing plate 80 is located between the dimming panel 30 and the backlight module 50.

Referring to fig. 11, a display device according to another embodiment of the invention includes a display panel 10, a dimming panel 30 and a backlight module 50, wherein the display panel 10 and the dimming panel 30 are adhered by an adhesive 90. The adhesive 90 may be OCA (optical Clear adhesive). The upper electrode 3024 of the dimming panel 30 is divided into a plurality of pieces. The remaining structures of the display panel 10, the dimming panel 30 and the backlight module 50 of the display device of the present embodiment are the same as the structures of the display panel 10, the dimming panel 30 and the backlight module 50 of the display device shown in fig. 3, and are not described herein again. In this embodiment, the upper electrode 3024 is configured to receive the display voltage and the pressure touch voltage at different time intervals, respectively, so as to implement the display function and the pressure touch function of the display device. By bonding the display panel 10 and the light control panel 30, pressing the display panel 10 on the outer side is more advantageous for deforming the light control panel 30. It can be understood that the display device of the embodiment shown in fig. 3 can also implement the pressure touch function under the corresponding voltage driving, as long as the outer display panel 10 is pressed to deform the dimming panel 30.

Referring to fig. 12, the upper electrode 3024 receives the display voltage and the pressure touch voltage at different time periods, specifically, in a refresh period T of the display device, a direct current voltage is applied to the upper electrode 3024 within a time period T2, and the display device realizes a display function; an ac voltage with a waveform of a pulse square wave with an amplitude of V1 is applied to the upper electrode 3024 in a time period t1, and a capacitance change between the upper electrode 3024 and the second pixel electrode 3044 is detected in a time period t1, that is, a deformation of the display device is detected, thereby implementing a pressure touch function. Here T-T1 + T2. Specifically, when the voltage value detected by the detection circuit is V1, it indicates that there is no pressing action, and when the voltage value detected by the detection circuit is less than V1, it indicates that the display device is pressed. Specifically, the refresh frequency of the display device may be 60HZ, the time period t1 may be 3ms, the time period t2 may be 13.6ms, and the time periods t1 and t2 may be adjusted, but the time period t2 is preferably longer to ensure the normal display function of the display device. Preferably, V1 is 5V.

The invention also discloses a display device driving method, which is used for controlling the display device, and the display device driving method of one embodiment comprises the following steps: the display voltage and the pressure touch voltage are respectively applied to the upper electrode 3024 of the first upper substrate 302 of the dimming panel 30 at different periods of time to respectively implement the display function and the pressure touch function of the display device.

The applying the display voltage and the pressure touch voltage to the upper electrode 3024 of the first upper substrate 302 of the dimming panel 30 at different periods of time includes: in one refresh period T of the display device, a direct-current voltage is applied to the upper electrode 3024 for a time period T2, and the display device realizes a display function. An alternating voltage with a waveform of a pulse square wave with an amplitude of V1 is applied to the upper electrode 3024 in a time period T1, and a capacitance change between the upper electrode 3024 and the second pixel electrode 3044 is detected in a time period T1, that is, a deformation of the display device is detected, so that a pressure touch function is implemented, where T1+ T2 is equal to T.

For the dimming panel 30, different voltages are applied to the second pixel electrode 3044 to form or not form an electric field between the second pixel electrode 3044 and the upper electrode 3024, so that the liquid crystal molecules in the second liquid crystal layer 306 are deflected or not deflected, thereby implementing a local dimming (sub-area display) function and implementing the dimming function of the dimming panel 30. For the display panel 10, corresponding electrical signals are applied to the first pixel electrode 1046 and the first common electrode 1044 according to a normal driving manner of the display panel to realize image display of the liquid crystal panel, which is not described herein again.

In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on," "disposed on" or "located on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc., indicate the orientation or weight relationship based on the orientation or weight relationship shown in the drawings, only for the sake of clarity and descriptive convenience of the technical solution, and thus should not be construed as limiting the present invention.

As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

As used herein, unless otherwise indicated, "plurality," "plurality," or "a number" means two or more.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A display device, comprising a display panel (10), a dimming panel (30) and a backlight module (50) stacked, wherein the dimming panel (30) is configured to adjust the intensity of light emitted by the backlight module (50);

the display panel (10) comprises a first array substrate (104), wherein a first scanning line (108) extending along a first direction and a first data line (110) extending along a second direction are further arranged on the first array substrate (104), and a plurality of display pixel units are defined by the intersection of the first scanning line (108) and the first data line (110);

the dimming panel (30) comprises a second array substrate (304), wherein the second array substrate (304) comprises a plurality of second scanning lines (308) and a plurality of second data lines (310), each second scanning line (308) is a broken line, each second data line (310) is a broken line, two adjacent second scanning lines (308) and two adjacent second data lines (310) intersect to define a plurality of oblique dimming pixel units (P), and the second scanning lines extending along the first direction intersect with the second data lines (310) extending along the second direction.

2. The display device according to claim 1, wherein the second scan line (308) comprises a plurality of first traces (3082) and a plurality of second traces (3084), the first traces (3082) and the second traces (3084) are alternately arranged along the second direction, and two adjacent first traces (3082) and second traces (3084) are arranged with a transverse axis symmetry;

the second data line (310) includes a plurality of third traces (3102) and a plurality of fourth traces (3104), the third traces (3102) and the fourth traces (3104) are alternately arranged along the first direction, and two adjacent third traces (3102) and fourth traces (3104) are arranged in longitudinal axial symmetry.

3. The display device according to claim 2, wherein the first trace (3082) comprises a plurality of first line segments (3085) and a plurality of second line segments (3086), the plurality of first line segments (3085) and the plurality of second line segments (3086) are alternately arranged along the first direction, and two adjacent first line segments (3085) and second line segments (3086) are vertically connected with each other;

the second routing line (3084) comprises a plurality of third line segments (3087) and a plurality of fourth line segments (3088), the plurality of third line segments (3087) and the plurality of fourth line segments (3088) are alternately arranged along the first direction, and two adjacent third line segments (3087) and adjacent fourth line segments (3088) are vertically connected with each other;

the third routing line (3102) comprises a plurality of fifth line segments (3105) and a plurality of sixth line segments (3106), the plurality of fifth line segments (3105) and the plurality of sixth line segments (3106) are alternately arranged along the second direction, and the adjacent fifth line segments (3105) and the adjacent sixth line segments (3106) are vertically connected with each other;

the fourth routing line (3104) includes a plurality of seventh line segments (3107) and a plurality of eighth line segments (3108), the plurality of seventh line segments (3107) and the plurality of eighth line segments (3108) are alternately arranged along the second direction, and the adjacent seventh line segments (3107) and the eighth line segments (3108) are vertically connected to each other.

4. A display device according to claim 3, wherein a junction of the first line segment (3085) and the second line segment (3086) near one end of the second trace (3084) is adjacent to a junction of the third line segment (3087) and the fourth line segment (3088) near one end of the first trace (3082) with a gap, the first line segment (3085) and the second line segment (3086) are connected by a first connecting portion (3090), the third line segment (3087) and the fourth line segment (3088) are connected by a second connecting portion (3091), and the first connecting portion (3090) and the second connecting portion (3091) are arranged at intervals;

the joint of one end of the fifth line segment (3105) and one end of the sixth line segment (3106), which is close to the fourth wire (3104), is adjacent to the joint of one end of the seventh line segment (3107) and one end of the eighth line segment (3108), which is close to the third wire (3102), with a gap left therebetween, the fifth line segment (3105) and the sixth line segment (3106) are connected by a third connecting portion (3110), the seventh line segment (3107) and the eighth line segment (3108) are connected by a fourth connecting portion (3111), and the third connecting portion (3110) and the fourth connecting portion (3111) are arranged at intervals.

5. The display device according to claim 3, wherein the first line segment (3085), the second line segment (3086), the third line segment (3087), the fourth line segment (3088), the fifth line segment (3105), the sixth line segment (3106), the seventh line segment (3107) and the eighth line segment (3108) are equal in length, and an intersection point of the second scan line (308) and the second data line (310) is located at a midpoint of each line segment.

6. The display device according to claim 1, wherein the diagonal dimming pixel cell (P) defined by the intersection of the second scan line (308) and the second data line (310) comprises two adjacent quadrilateral structures.

7. The display device according to claim 6, wherein a second pixel electrode (3044) and a second switching element (3046) are provided in each of the dimming pixel cells (P); or, each of the dimming pixel units (P) is provided with a second pixel electrode (3044) and two second switch elements (3046).

8. The display device according to claim 1, wherein at least a portion of the first scan line (108) passes through an intersection of the second scan line (308) and the second data line (310), and wherein at least a portion of the first data line (110) passes through an intersection of the second scan line (308) and the second data line (310).

9. The display device according to claim 1, wherein the display panel (10) further comprises a first upper substrate (102) and a first liquid crystal layer (106) disposed between the first upper substrate (102) and the first array substrate (104), and a first pixel electrode (1044) is disposed within the display pixel cell;

the dimming panel (30) further comprises a second upper substrate (302) and a second liquid crystal layer (306) arranged between the second upper substrate (302) and the second array substrate (304), and a second pixel electrode (3044) is arranged in the dimming pixel unit;

the second upper substrate (302) includes a third substrate (3022) and an upper electrode (3024), the upper electrode (3024) being closer to the second liquid crystal layer (306) than the third substrate (3022); the second array substrate (304) includes a fourth substrate (3042) and a second pixel electrode (3044), the second pixel electrode (3044) being closer to the second liquid crystal layer (306) than the fourth substrate (3042);

during one refresh period T of the display device, the upper electrode (3024) is used for receiving direct current voltage in a time period T2, and the display device realizes a display function; and receiving an alternating-current voltage with a waveform of a pulse square wave with the amplitude of V1 in a time period T1, and realizing the pressure touch function by the display device, wherein T is T1+ T2.

10. A display device driving method for driving the display device according to claim 9, characterized by comprising: in one refresh period T of the display device, applying direct current voltage to the upper electrode (3024) in a time period T2, and realizing a display function by the display device; and applying an alternating-current voltage of a pulse square wave with the waveform amplitude of V1 in a time period of T1, and realizing the pressure touch function by the display device, wherein T is T1+ T2.