TWI793926B - Display device and driving method thereof - Google Patents

Abstract

A display device includes a display panel and a backlight module. The display panel includes a peripheral area and a display area. A driving circuit of the display panel is disposed in the peripheral area. The backlight module is overlapping with the display panel and includes a first switch and a second switch. The first switch is configured to control a part of the backlight module overlapping the driving circuit to switch between illuminating the driving circuit and not illuminating the driving circuit. The second switch is configured to control at least a part of light source of the backlight module.

Description

Display device and driving method thereof

The invention relates to a display device and a driving method thereof.

At present, in order to save the production cost of the display panel, many manufacturers directly manufacture the driving circuit of the display panel in the display panel, thereby saving the cost of purchasing additional driving circuit chips. A gate driver on array (GOA) is a gate driver circuit structure directly formed in a display panel, which includes many active components. In the existing on-array gate drive circuit, active components are prone to cracking after long-term use, which leads to abnormal output signals of the drive circuit. Therefore, there is an urgent need for a method that can solve the aforementioned problems.

The invention provides a display device, which can solve the problem that the deterioration of the driving circuit affects the display quality.

The invention provides a driving method of a display device, which can solve the problem that the deterioration of the driving circuit affects the display quality.

At least one embodiment of the invention provides a display device. The display device includes a display panel and a backlight module. The display panel includes a peripheral area and a display area. The driving circuit of the display panel is disposed in the peripheral area. The backlight module overlaps the display panel and includes a first switch and a second switch. The first switch is configured to control the part of the backlight module overlapping the driving circuit to switch between illuminating the driving circuit and not illuminating the driving circuit. The second switch is configured to control at least part of the light sources of the backlight module.

At least one embodiment of the invention provides a driving method of a display device. The display device includes a display panel and a backlight module. The display panel includes a peripheral area and a display area. The driving circuit of the display panel is disposed in the peripheral area. The backlight module overlaps the display panel and includes a first switch and a second switch. The first switch is configured to control the part of the backlight module overlapping the driving circuit to switch between illuminating the driving circuit and not illuminating the driving circuit. The second switch is configured to control at least part of the light sources of the backlight module. A display device is provided; the display panel and the backlight module are activated, wherein the driving circuit of the display panel is driven in a lighted environment; and it is judged whether the driving circuit operates normally. When it is judged that the driving circuit is operating normally, the first switch is turned off so that the driving circuit continues to drive in an environment without light. When it is judged that the driving circuit is not operating normally, the driving circuit is continuously driven in the illuminated environment.

FIG. 1A is a schematic top view of a display panel according to an embodiment of the present invention. FIG. 1B is a schematic cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. For the convenience of illustration, FIG. 1A shows the first substrate, the pixel array and the driving circuit of the display panel, and omits other components of the display panel. FIG. 2 is a schematic cross-sectional view of a display device when a first switch is turned off according to an embodiment of the present invention.

Please refer to FIG. 1A and FIG. 1B , the display device 1 includes a display panel 10 and a backlight module 20 .

The display panel 10 includes a peripheral area 102 and a display area 104 . The peripheral area 102 is located on at least one side of the display area 104 . For example, the peripheral area 102 is located on one side, two sides, three sides or four sides of the display area 104 . In this embodiment, the peripheral area 102 is located on two opposite sides of the display area 104 .

In some embodiments, the display panel 10 includes a pixel array substrate 100 , and the pixel array substrate 100 includes a first substrate 1000 , a pixel array 120 (not shown in FIG. 1B ) and a driving circuit 110 . The first substrate 1000 is a transparent substrate, and the material of the first substrate 1000 includes, for example, glass, quartz, organic polymer or other suitable materials.

The pixel array 120 is disposed in the display area 104 . In this embodiment, the pixel array 120 includes a plurality of scan lines SL, a plurality of data lines DL, a plurality of switching elements 122 and a plurality of pixel electrodes 124 . Each pixel electrode 124 is electrically connected to a corresponding switch element 122 . Each switch element 122 is electrically connected to a corresponding scan line SL and a corresponding data line DL.

The driving circuit 110 is disposed in the peripheral area 102 . In this embodiment, the display panel 10 is a dual-side driven display panel, and the two driving circuits 110 are respectively disposed on two sides of the pixel array 120 , but the present invention is not limited thereto. In other embodiments, the driving circuit 110 is disposed on one side of the pixel array 120 . In this embodiment, the driving circuit 110 is formed on the first substrate 1000 , and the driving circuit 110 is electrically connected to the scan line SL of the pixel array 120 . The driving circuit 110 is a gate driver on array (GOA). In some embodiments, the driving circuit 110 and the pixel array 120 are formed together on the first substrate 1000 , thereby saving the cost of the gate driving chip.

In some embodiments, the data line DL is electrically connected to a chip on film package (Chip on Film, COF), wherein the chip on film package (not shown) is disposed in the peripheral area 102 .

In this embodiment, the display panel 10 further includes a second substrate 140 and a display medium 130 . The display medium 130 includes, for example, liquid crystal molecules. The display medium 130 is located between the pixel array substrate 100 and the second substrate 140 . For example, the display medium 130 is located between the first substrate 1000 and the second substrate 140 . In some embodiments, a filter element, a black matrix, a common electrode and other components are disposed on the second substrate 140 , but the invention is not limited thereto.

The backlight module 20 overlaps the display panel 10 . The backlight module 20 includes a frame 200 , a light source 210 , a first switch 220 and a second switch 212 . The first switch 220 is configured to control the portion of the backlight module 20 overlapping the driving circuit 110 to switch between illuminating the driving circuit 110 and not illuminating the driving circuit 110 . The second switch 212 is configured to control at least part of the light sources 210 of the backlight module 20 .

The light source 210 is disposed on the outer frame 200 . In this embodiment, the light source 210 includes a first light emitting element 214 and a second light emitting element 216 . The first light emitting element 214 overlaps the driving circuit 110 in the peripheral area 102 , and the second light emitting element 216 overlaps the display area 104 . In this embodiment, the first light emitting element 214 and the second light emitting element 216 are light emitting diodes, and the first light emitting element 214 and the second light emitting element 216 are disposed on the circuit board. In some embodiments, the backlight module 20 is a direct type backlight module, and the first light-emitting elements 214 and the second light-emitting elements 216 are arrayed on the bottom surface inside the outer frame 200 , but the invention is not limited thereto. In other embodiments, the backlight module 20 is a side-type backlight module, and the light emitting elements of the light source 210 are disposed on the side of the outer frame 200 . When the backlight module 20 is an edge-type backlight module, the light source 210 further includes a light guide plate, and the light guide plate is used to adjust the light-emitting direction of the light-emitting elements.

In some embodiments, the second switch 212 is configured to control the first light emitting element 214 and the second light emitting element 216 . In other words, the second switch 212 simultaneously controls the light source 210 of the portion of the backlight module 20 overlapping the driving circuit 110 and the light source 210 of the portion of the backlight module 20 overlapping the display area 104 . In this embodiment, the second switch 212 is disposed under the first light emitting element 214 and the second light emitting element 216 , but the invention is not limited thereto. In other embodiments, the second switch 212 is disposed at other positions, and is electrically connected to the first light emitting element 214 and the second light emitting element 216 through wires.

In this embodiment, the first switch 220 is an adjustable member 222 . The adjustable member 222 is movably disposed in the backlight module 20 . For example, the adjustable member 222 is telescopically disposed on the outer frame 200 , and the adjustable member 222 is configured to switch between overlapping the driving circuit 110 and not overlapping the driving circuit 110 . Specifically, when the first switch 220 is turned on, the adjustable member 222 retracts into the outer frame 200, and the adjustable member 222 does not overlap the driving circuit 110 (as shown in FIG. 1B ); when the first switch 220 is turned off, the adjustable The member 222 protrudes from the outer frame 200 , and the adjustable member 222 overlaps the driving circuit 110 (as shown in FIG. 2 ).

In this embodiment, when the first switch 220 is turned on, the adjustable member 222 retracts into the outer frame 200 . But the present invention is not limited thereto. In other embodiments, when the first switch 220 is turned on, the adjustable member 222 will move or deform, so that the adjustable member 222 does not shield the light source 210 under the driving circuit.

FIG. 6 is a flowchart of a driving method of a display device according to an embodiment of the present invention.

Please refer to FIG. 1B , FIG. 2 and FIG. 6 , in step 601 , a display device 1 is provided.

In step 602, the display panel 10 and the backlight module 20 are activated. In step 603 , the driving circuit 110 of the display panel 10 is driven in an illuminated environment. When the driving circuit 110 is lighting, the driving circuit 110 may have a higher margin voltage. In the embodiment shown in FIG. 1B and FIG. 2, when the display panel 10 and the backlight module 20 are activated, the first switch 220 is turned on so that the adjustable member 222 does not overlap the drive circuit 110, so the light source 210 of the backlight module 20 The emitted light L can be irradiated to the driving circuit 110 .

In step 604, it is determined whether the driving circuit 110 operates normally. For example, the feedback signal of the driving circuit 110 is received, and the feedback signal is used to determine whether the output signal of the driving circuit 110 is abnormal.

Please refer to step 604 and step 605 , when it is determined that the driving circuit 110 is operating normally, the first switch 220 is turned off so that the driving circuit 110 continues to drive in a non-illuminated environment. In some embodiments, since the driving circuit 110 is driven in an illuminated environment after the display panel 10 and the backlight module 20 are activated (as described in step 603 ), the driving circuit 110 can heat up quickly. The driving capability of the driving circuit 110 has been improved after heating up. Therefore, even if the driving circuit 110 is driven in a non-illuminated environment in step 604 , the driving circuit 110 still has sufficient driving capability. In the embodiment of FIG. 1B and FIG. 2 , when it is judged that the driving circuit 110 is operating normally, the first switch 220 is turned off so that the adjustable member 222 overlaps the driving circuit 110, thereby making the light emitted by the light source 210 of the backlight module 20 L cannot be irradiated to the driving circuit 110 .

Please refer to step 604 and step 603, when it is determined that the driving circuit 110 is not operating normally, the driving circuit 110 is continuously driven in a lighted environment. Specifically, the open state of the first switch 220 is maintained, so that the driving circuit 110 continues to be driven in an illuminated environment. After driving the driving circuit 110 for a while, re-enter step 603 and re-determine whether the driving circuit 110 is operating normally. In the embodiment shown in FIG. 1B and FIG. 2 , when it is determined that the driving circuit 110 is operating abnormally, the first switch 220 is kept on, so that the adjustable member 222 does not overlap the driving circuit 110 .

3A is a schematic partial cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. 3B is a schematic partial cross-sectional view of a display device when the first switch is turned off according to an embodiment of the present invention. For example, FIG. 3A and FIG. 3B are schematic cross-sectional views of the display device in FIG. 1B and FIG. 2 at the position of the driving circuit, respectively.

In FIG. 3A and FIG. 3B , one active element T in the driving circuit 110 (please refer to FIG. 1B and FIG. 2 ) is shown, but this does not mean that the driving circuit 110 includes only one active element T. The number of active elements T in the driving circuit 110 can be adjusted according to actual needs. For example, the driving circuit 110 may include 23 active elements and one capacitor to form a driving circuit with a 23T1C architecture; or the driving circuit 110 may include 11 active elements and two capacitors to form a driving circuit with a 11T2C architecture. The driving circuit can also include other numbers of active elements and other numbers of capacitors.

Please refer to FIG. 3A , the first substrate 1000 overlaps the backlight module 20 . The active device T is disposed on the first substrate 1000 . The active device T includes a semiconductor channel layer CH, a gate G, a source S and a drain D. As shown in FIG. The gate G is located on the first substrate 1000 . The gate insulating layer 1002 is located on the gate G, and the gate G is located between the gate insulating layer 1002 and the first substrate 1000 . The source S and the drain D are located on the gate insulating layer 1002 . The semiconductor channel layer CH is located under the source S and the drain D, and the semiconductor channel layer CH is electrically connected to the source S and the drain D. The semiconductor channel layer CH overlaps the gate G. In this embodiment, the semiconductor channel layer CH includes a drain region CH1 , a channel region CH2 and a source region CH3 connected in sequence. The drain region CH1 and the source region CH3 are respectively located under the drain D and the source S, and at least part of the channel region CH2 is located between the drain region CH1 and the source region CH3. In some embodiments, the doping concentration of the drain region CH1 and the source region CH3 is different from that of the channel region CH2.

In some embodiments, the passivation layer 1005 is located on the active device T to cover the active device T. Referring to FIG. In some embodiments, the passivation layer 1005 is conformally formed on the surface of the active device T. Referring to FIG. In some embodiments, the passivation layer 1005 includes silicon oxide, silicon nitride, silicon oxynitride or other insulating materials. In this embodiment, the display medium 130 is disposed on the active device T, but the invention is not limited thereto.

In some embodiments, the materials of the gate G, the source S, and the drain D include, for example, metal materials, nitrides of metal materials, oxides of metal materials, oxynitrides of metal materials, or other suitable materials or metals. Stacked layers of materials with other conductive materials. In some embodiments, the material of the semiconductor channel layer CH includes, for example, amorphous silicon, polycrystalline silicon, microcrystalline silicon, single crystal silicon, organic semiconductor materials, oxide semiconductor materials (for example: indium zinc oxide, indium gallium zinc oxide or other suitable materials, or a combination of the above materials) or other suitable materials or a combination of the above materials.

In this embodiment, the active device T is a bottom gate active device, but the invention is not limited thereto. In other embodiments, the active device T is a top gate active device.

In this embodiment, after the display device 1 is used for a long time, the semiconductor channel layer CH of the active element T may deteriorate, resulting in deterioration of the driving capability of the driving circuit 110 . In this embodiment, when the display panel 10 and the backlight module 20 are activated, the first switch 220 is turned on so that the adjustable member 222 does not overlap the active element T of the driving circuit 110 (as shown in FIG. 1B and FIG. 3A ), Therefore, the light L emitted by the light source 210 of the backlight module 20 can irradiate the active element T of the driving circuit 110 . In this embodiment, the light L emitted by the light source 210 is reflected and refracted in the display panel 10 , and irradiates to the semiconductor channel layer CH of the active device T.

Please refer to FIG. 3B. When it is judged that the driving circuit 110 is operating normally, the first switch 220 is turned off so that the adjustable member 222 overlaps the active element T of the driving circuit 110, thereby making the light L emitted by the light source 210 of the backlight module 20 The active element T of the driving circuit 110 cannot be irradiated.

4A is a schematic cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. 4B is a schematic cross-sectional view of a display device when the first switch is turned off according to an embodiment of the present invention.

It must be noted here that the embodiment of FIG. 4A and FIG. 4B continues to use the component numbers and part of the content of the embodiment of FIG. 1A to FIG. A description of the technical content. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

Please refer to FIG. 4A , the display device 2 includes a display panel 10 and a backlight module 20a.

The backlight module 20 a overlaps the display panel 10 . The backlight module 20 a includes a frame 200 , a light source 210 , a first switch 220 and a second switch 212 . The first switch 220 is configured to control the portion of the backlight module 20 a overlapping the driving circuit 110 to switch between illuminating the driving circuit 110 and not illuminating the driving circuit 110 . The second switch 212 is configured to control at least part of the light sources 210 of the backlight module. In this embodiment, the second switch 212 is configured to control a portion of the light sources 210 of the backlight module 20 a overlapping the display area 104 .

The light source 210 is disposed on the outer frame 200 . In this embodiment, the light source 210 includes a first light emitting element 214 and a second light emitting element 216 . The first light emitting element 214 overlaps the driving circuit 110 in the peripheral area 102 , and the second light emitting element 216 overlaps the display area 104 . In this embodiment, the first light emitting element 214 and the second light emitting element 216 are light emitting diodes, and the first light emitting element 214 and the second light emitting element 216 are disposed on the circuit board. In some embodiments, the backlight module 20 is a direct type backlight module, and the first light-emitting elements 214 and the second light-emitting elements 216 are arrayed on the bottom surface of the outer frame 200 .

In some embodiments, the first switch 220 is a switch for the first light emitting element 214 , and the second switch 212 is a switch for the second light emitting element 216 . In other words, the first light emitting element 214 and the second light emitting element 216 can be turned on or off independently. Specifically, when the first switch 220 is turned on, the first light emitting element 214 will emit light L to the driving circuit 110 (as shown in FIG. 4A ); A ray L is emitted (as shown in FIG. 4B ). When the second switch 212 is turned on, the second light emitting element 216 emits light L to the display area 104 (as shown in FIG. 4A ); when the second switch 212 is turned off, the second light emitting element 216 does not emit light L to the driving circuit 110 ( as shown in Figure 4B).

In this embodiment, the first switch 220 is disposed under the first light emitting element 214 , and the second switch 212 is disposed under the second light emitting element 216 , but the invention is not limited thereto. In other embodiments, the first switch 220 and the second switch 212 are disposed at other positions, and are electrically connected to the first light emitting element 214 and the second light emitting element 216 respectively through wires.

Please refer to FIG. 4A , FIG. 4B and FIG. 6 , in step 601 , a display device 2 is provided.

In step 602, the display panel 10 and the backlight module 20a are activated. In step 603 , the driving circuit 110 of the display panel 10 is driven in an illuminated environment. When the driving circuit 110 is lighting, the driving circuit 110 may have a higher margin voltage. In the embodiment shown in FIG. 4A and FIG. 4B , when the display panel 10 and the backlight module 20 a are activated, the first switch 220 is turned on so that the light L emitted by the light source 210 of the backlight module 20 a can irradiate the driving circuit 110 . In some embodiments, when the display panel 10 and the backlight module 20a are turned on, the first switch 220 and the second switch 212 are turned on at the same time to light up the first light emitting element 214 and the second light emitting element 216 .

In step 604, it is determined whether the driving circuit 110 operates normally. For example, the feedback signal of the driving circuit 110 is received, and the feedback signal is used to determine whether the output signal of the driving circuit 110 is abnormal.

Please refer to step 604 and step 605 , when it is determined that the driving circuit 110 is operating normally, the first switch 220 is turned off so that the driving circuit 110 continues to drive in a non-illuminated environment. In some embodiments, after the display panel 10 and the backlight module 20 a are activated, the driving circuit 110 is driven in a lighted environment (as described in step 603 ), therefore, the driving circuit 110 can heat up quickly. The driving capability of the driving circuit 110 has been improved after heating up. Therefore, even if the driving circuit 110 is driven in a non-illuminated environment in step 604 , the driving circuit 110 still has sufficient driving capability. In the embodiment of FIG. 4A and FIG. 4B , when it is judged that the driving circuit 110 is operating normally, the first switch 220 is turned off to turn off the first light-emitting element 214, so that the light L emitted by the light source 210 of the backlight module 20a cannot be irradiated to drive circuit 110.

Please refer to step 604 and step 603, when it is determined that the driving circuit 110 is not operating normally, the driving circuit 110 is continuously driven in a lighted environment. Specifically, the open state of the first switch 220 is maintained, so that the driving circuit 110 continues to be driven in an illuminated environment. After driving the driving circuit 110 for a while, re-enter step 603 and re-determine whether the driving circuit 110 is operating normally. In the embodiment shown in FIG. 4A and FIG. 4B , when it is determined that the driving circuit 110 is operating abnormally, the first switch 220 is kept turned on so that the first light emitting element 214 can continue to emit light L toward the driving circuit 110 .

5A is a schematic partial cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. 5B is a schematic partial cross-sectional view of a display device when the first switch is turned off according to an embodiment of the present invention. For example, FIG. 5A and FIG. 5B are schematic cross-sectional views of the display device in FIG. 4A and FIG. 4B at the position of the driving circuit, respectively.

In FIG. 5A and FIG. 5B , one active element Ta in the driving circuit 110 (please refer to FIG. 4A and FIG. 4B ) is shown, but this does not mean that the driving circuit 110 only includes one active element Ta. The number of active elements Ta in the driving circuit 110 can be adjusted according to actual needs.

Please refer to FIG. 5A , the first substrate 1000 overlaps the backlight module 20 . The active device Ta is disposed on the first substrate 1000 . The active device Ta includes a semiconductor channel layer CH, a gate G, a source S and a drain D. As shown in FIG. The source S and the drain D are located on the first substrate 1000 . The semiconductor channel layer CH is located on the source S and the drain D, and is electrically connected to the source S and the drain D. In this embodiment, the semiconductor channel layer CH includes a drain region CH1 , a channel region CH2 and a source region CH3 connected in sequence. The drain region CH1 and the source region CH3 are respectively formed on the drain D and the source S, and at least part of the channel region CH2 is located between the drain region CH1 and the source region CH3. In some embodiments, the doping concentration of the drain region CH1 and the source region CH3 is different from that of the channel region CH2. At least part of the source S and at least part of the drain D are located between the semiconductor channel layer CH and the first substrate 1000 . The gate insulating layer 1002 is located on the semiconductor channel layer CH. In this embodiment, the gate insulating layer 1002 includes a first layer 1002a and a second layer 1002b, but the invention is not limited thereto. The gate G is located on the gate insulating layer 1002 . The semiconductor channel layer CH overlaps the gate G.

In some embodiments, the flat layer 1004 is located on the active device Ta to cover the active device Ta. In this embodiment, the display medium 130 is disposed on the active element Ta, but the invention is not limited thereto.

In some embodiments, the materials of the gate G, the source S, and the drain D include, for example, metal materials, nitrides of metal materials, oxides of metal materials, oxynitrides of metal materials, or other suitable materials or metals. Stacked layers of materials with other conductive materials. In some embodiments, the material of the semiconductor channel layer CH includes, for example, amorphous silicon, polycrystalline silicon, microcrystalline silicon, single crystal silicon, organic semiconductor materials, oxide semiconductor materials (for example: indium zinc oxide, indium gallium zinc oxide or other suitable materials, or a combination of the above materials) or other suitable materials or a combination of the above materials.

In this embodiment, the active device Ta is a top gate active device, but the invention is not limited thereto. In other embodiments, the active device Ta is a bottom gate active device.

In this embodiment, after the display device 2 is used for a long time, the semiconductor channel layer CH of the active element Ta may deteriorate, resulting in deterioration of the driving capability of the driving circuit 110 . In this embodiment, when the display panel 10 and the backlight module 20a are activated, the first switch 220 is turned on to turn on the first light-emitting element 214 overlapping the driving circuit 110 (as shown in FIG. 4A ). Therefore, the backlight module 20a The light L emitted by the light source 210 can irradiate the active element Ta of the driving circuit 110 . In this embodiment, the light L emitted by the light source 210 irradiates the semiconductor channel layer CH of the active device Ta.

Please refer to FIG. 5B. When it is judged that the driving circuit 110 is operating normally, the first switch 220 is turned off to turn off the first light-emitting element 214 overlapping the driving circuit 110 (as shown in FIG. 4B ), thereby enabling the light source 210 of the backlight module 20a The emitted light L cannot irradiate the active element Ta of the driving circuit 110 .

1,2: display device 10: Display panel 20,20a: Backlight module 100:Pixel array substrate 102: Surrounding area 104: display area 110: drive circuit 120: pixel array 122: switch element 124: pixel electrode 130: display media 140: second substrate 200: outer frame 210: light source 212: second switch 214: the first light-emitting element 216: the second light-emitting element 220: first switch 222: adjustable components 601, 602, 603, 604, 605: steps 1000: first substrate 1002: gate insulating layer 1002a: first floor 1002b: second floor 1004: flat layer 1005: passivation layer CH: semiconductor channel layer CH1: Drain area CH2: channel area CH3: source region D: drain DL: data line G: gate L: light S: source SL: scan line T, Ta: active components

FIG. 1A is a schematic top view of a display panel according to an embodiment of the present invention. FIG. 1B is a schematic cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a display device when a first switch is turned off according to an embodiment of the present invention. 3A is a schematic partial cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. 3B is a schematic partial cross-sectional view of a display device when the first switch is turned off according to an embodiment of the present invention. 4A is a schematic cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. 4B is a schematic cross-sectional view of a display device when the first switch is turned off according to an embodiment of the present invention. 5A is a schematic partial cross-sectional view of a display device when a first switch is turned on according to an embodiment of the present invention. 5B is a schematic partial cross-sectional view of a display device when the first switch is turned off according to an embodiment of the present invention. FIG. 6 is a flowchart of a driving method of a display device according to an embodiment of the present invention.

601, 602, 603, 604, 605: steps

Claims (10)

A display device comprising: A display panel, including a peripheral area and a display area, wherein a driving circuit of the display panel is arranged in the peripheral area; and A backlight module overlaps the display panel and includes: a first switch configured to control the portion of the backlight module overlapping the driving circuit to switch between illuminating the driving circuit and not illuminating the driving circuit; and A second switch is configured to control at least part of the light sources of the backlight module. The display device as claimed in item 1, wherein the light source of the backlight module comprises: a first light-emitting element overlapping the driving circuit, and the first switch is a switch of the first light-emitting element; and A second light-emitting element overlaps the display area, and the second switch is a switch of the second light-emitting element. The display device as claimed in claim 1, wherein the first switch includes an adjustable member, and the adjustable member is movably configured in the backlight module. The display device according to claim 3, wherein the second switch simultaneously controls the light source of the portion of the backlight module overlapping the driving circuit and the light source of the portion of the backlight module overlapping the display area. The display device as described in claim 3, wherein the backlight module includes: An outer frame, wherein the light source is arranged on the outer frame, and the adjustable member is telescopically arranged on the outer frame, and the adjustable member is configured to overlap the driving circuit or not overlap the driving circuit switch between. The display device as described in claim 1, wherein the display panel further includes: A substrate overlaps the backlight module, and the driving circuit includes an active element, the active element is arranged on the substrate, and includes: a gate located on the substrate, wherein a gate insulating layer is located on the gate, and the gate is located between the gate insulating layer and the substrate; a semiconductor channel layer; and A source and a drain are located on the gate insulating layer, wherein the semiconductor channel layer is located under the source and the drain, and the semiconductor channel layer is electrically connected to the source and the drain, wherein The semiconductor channel layer overlaps the gate. The display device as claimed in item 1, wherein the display panel further includes: A substrate overlaps the backlight module, and the driving circuit includes an active element, the active element is arranged on the substrate, and includes: A source and a drain are located on the substrate; A semiconductor channel layer, located on the source and the drain, and electrically connected to the source and the drain, and at least part of the source and at least part of the drain are located between the semiconductor channel layer and the substrate , wherein a gate insulating layer is located on the semiconductor channel layer; and A gate is located on the gate insulating layer, wherein the semiconductor channel layer overlaps the gate. A driving method of a display device, comprising: Provide a display device, the display device includes: A display panel, including a peripheral area and a display area, wherein a driving circuit of the display panel is arranged in the peripheral area; and A backlight module overlaps the display panel and includes: a first switch configured to control the portion of the backlight module overlapping the driving circuit to switch between illuminating the driving circuit and not illuminating the driving circuit; and a second switch configured to control at least some of the light sources of the backlight module; activating the display panel and the backlight module, wherein the driving circuit of the display panel is driven in an illuminated environment; and Judging whether the driving circuit is operating normally, wherein: When it is judged that the driving circuit is operating normally, turning off the first switch enables the driving circuit to continue driving in a non-illuminated environment; and When it is judged that the driving circuit is not operating normally, the driving circuit is continuously driven in a lighted environment. The driving method of a display device according to claim 8, wherein the first switch includes an adjustable member, the adjustable member is movably arranged in the backlight module, and wherein: When the display panel and the backlight module are activated, the first switch is turned on so that the adjustable component does not overlap the driving circuit. The driving method of a display device as described in Claim 9, wherein: When judging that the driving circuit is operating normally, closing the first switch so that the adjustable member overlaps the driving circuit; and When it is judged that the drive circuit is not in normal operation, the adjustable member is not overlapped with the drive circuit.

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