CN106908985B

CN106908985B - Display device

Info

Publication number: CN106908985B
Application number: CN201710206577.1A
Authority: CN
Inventors: 陈煌彬; 周婷
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2020-02-07
Anticipated expiration: 2037-03-31
Also published as: CN106908985A

Abstract

The invention relates to the field of display, and particularly relates to a display device. The display device provided by the invention comprises a backlight module and a display panel positioned on the light-emitting side of the backlight module. The backlight module comprises a light source system and a quantum dot layer positioned between the light source system and the display panel, wherein the light source system comprises a first color light source; the display panel comprises a color film substrate and a color resistance layer arranged on the color film substrate, a display area of the color film substrate comprises a central area and an edge area surrounding the central area, and the color resistance layer comprises a first color resistance. The area of the first color resistor arranged at the edge area is smaller than that of the first color resistor arranged at the central area. The area of the first color resistor arranged on the edge region is reduced, so that excessive light of the first color emitted from the quantum dot layer failure region can be prevented from transmitting through the edge region of the color film substrate, and the problem that the display device emits the first color light at the position corresponding to the edge region is solved.

Description

Display device

Technical Field

The invention relates to the field of display, in particular to a display device.

Background

Currently, liquid crystal display devices are widely used in various electronic products, and as consumers demand more and more color vividness of display devices, liquid crystal display devices with high color gamut values are receiving more and more attention. A liquid crystal display device using a quantum dot thickening film (QDEF) as a backlight can achieve a color gamut value satisfying high requirements, compared to a conventional liquid crystal display device using a Light Emitting Diode (LED), a cold cathode fluorescent tube (CCFL), or the like as a backlight.

A conventional liquid crystal display device using QDEF as a backlight is configured as shown in fig. 1, and includes a QDEF backlight 01 and a display panel 02. The QDEF backlight 01 includes a light source system 011 and a quantum dot layer 012, where the light source system 011 adopts a blue light source, and the light source system 011 emits blue light to excite the quantum dot layer 012 to emit white light. The white light emitted from the quantum dot layer 012 is selectively output by the liquid crystal and polarizer in the display panel 02 as a backlight source of the liquid crystal display device.

However, the quantum dot layer 012 may generate a failure region 0121 surrounding the normal light emitting region 0122 due to cutting or the like. Because the quantum dots in the failure region 0121 of the quantum dot layer 012 fail under the influence of air and water vapor, when the blue light emitted from the light source system 011 irradiates the failure region 0121, the failed quantum dots at the position cannot be excited to emit white light, and the blue light directly penetrates through the failure region 0121 and emits to the display panel 02. Causing a blue edge phenomenon at the edge of the display panel 02.

Disclosure of Invention

In view of this, the present invention provides a display device, which includes a backlight module and a display panel, wherein the display panel is located at a light emitting side of the backlight module. The backlight module comprises a light source system and a quantum dot layer, wherein the quantum dot layer is positioned between the light source system and the display panel, and the light source system comprises a first color light source. The display panel comprises a color film substrate and a color resistance layer, wherein the color resistance layer is arranged on the color film substrate; the display area of the color film substrate comprises a central area and an edge area surrounding the central area; the color resistance layer comprises a first color resistance. The area of each first color resistance arranged in the edge area is smaller than that of each first color resistance arranged in the central area.

Preferably, the area of any first color resistance arranged at the edge region is a first area, and the distance between the any first color resistance arranged at the edge region and the central region is a first distance; the first area is inversely related to the first distance.

Preferably, the width of the edge area is d, wherein d is more than or equal to 0mm and less than or equal to 4.7 mm.

Optionally, the first color light source is disposed at one side of the backlight module. The edge region of the color film substrate comprises an upper edge region, a lower edge region, a left edge region and a right edge region; the projection of the lower edge area on the backlight module covers the first color light source, the upper edge area and the lower edge area are arranged oppositely, and the left edge area and the right edge area are respectively positioned at two sides of the upper edge area and the lower edge area; the width of the upper edge area, the width of the left edge area and the width of the right edge area are all equal to 2.2mm, and the width of the lower edge area is equal to 4.6 mm.

Preferably, the color-resisting layer further comprises a second color-resisting layer, and the area of the second color-resisting layer arranged in the lower edge area is smaller than that of the second color-resisting layer arranged in the central area.

Optionally, the color-resisting layer further includes second color resists, and an area of each second color resist disposed in the edge region is equal to an area of each second color resist disposed in the central region.

Preferably, the color-resisting layer further comprises third color resists, and the area of each third color resist arranged at the edge region is equal to the area of each third color resist arranged at the central region.

Preferably, the areas of the second color resistance and the third color resistance disposed in the edge area are both larger than the area of the first color resistance disposed in the edge area.

Preferably, the first color light source is a blue light source, the first color resistor is a blue color resistor, the second color resistor is a green color resistor, and the third color resistor is a red color resistor.

Preferably, the display panel further includes an array substrate and a liquid crystal layer, the array substrate is disposed opposite to the color film substrate, and the liquid crystal layer is located between the array substrate and the color film substrate. The array substrate is provided with a plurality of thin film transistors which are arranged in a matrix mode, and each thin film transistor corresponds to each first color resistor, each second color resistor and each third color resistor one to one.

The area of the first color resistor arranged at the edge area is reduced, so that excessive light of the first color emitted from the quantum dot layer failure area can be prevented from transmitting through the edge area of the color film substrate, and the problem that the display device emits the first color light at the edge area is solved.

Drawings

FIG. 1 is a schematic diagram of a prior art display device with QDEF as a backlight source;

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

fig. 3 is an arrangement diagram of color resistors in a display area of a color film substrate according to an embodiment of the invention;

fig. 4A is an arrangement diagram of color resistors in a local display area of a color film substrate according to an embodiment of the present invention;

fig. 4B is another layout diagram of color resistors in a local display area of a color film substrate according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a display device according to another embodiment of the present invention;

fig. 6 is an arrangement diagram of color resistors in a local display area of a color film substrate according to another embodiment of the present invention;

fig. 7 is a schematic structural diagram of a display device according to still another embodiment of the invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.

It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

Referring to fig. 2 and 3, fig. 2 and 3 are a schematic structural diagram of a display device and an arrangement diagram of color resistors in a display area of a color filter substrate according to an embodiment of the present invention, respectively. Specifically, the display device provided by the invention comprises a backlight module 10 and a display panel 20, wherein the display panel 20 is located at the light-emitting side of the backlight module 10. Alternatively, the display device provided by the present invention may be a passive light emitting display device, and the backlight module 10 provides a light source for displaying for the display panel 20.

Further, the backlight module 10 includes a light source system 11 and a quantum dot layer 12, wherein the quantum dot layer 12 is located between the light source system 11 and the display panel 20; wherein the light source system 11 comprises a first color light source. Note that the first color light source emits light of a first color, so that the light source system 11 emits light of the first color, which irradiates and excites the quantum dot layer 12.

However, the inventors have found that the quantum dot layer 12 does not completely produce the desired light of a particular color because: after the quantum dot layer 12 is cut, the quantum dots on the peripheral edge of the quantum dot layer 12 may contact oxygen and water molecules in the air, resulting in failure of the quantum dots on the peripheral edge, and therefore, most of the light of the first color emitted by the light source system 11 may directly penetrate through the peripheral edge of the quantum dot layer 12, without exciting or only exciting some of the quantum dots to generate light of other colors. As can be seen, quantum dot layer 12 includes a failure region 121 and a normal light emitting region 122. When the light of the first color emitted by the light source system 11 irradiates the failure region 121 of the quantum dot layer 12, most of the light of the first color directly penetrates through the quantum dot layer; when the light of the first color emitted from the light source system 11 irradiates the normal light emitting region 122 of the quantum dot layer 12, the quantum dot layer at that position is excited to generate light of a specific color. Preferably, the light of the specific color generated by the light excitation quantum dot layer 12 of the first color emitted by the light source system 11 is white light, and the description is made with light of the specific color being white light in the present invention. More preferably, the light of the first color emitted by the light source system 11 is blue light, the quantum dot layer 12 includes red quantum dots and green quantum dots, the red quantum dots and the green quantum dots in the blue light excitation quantum dot layer 12 generate red light and green light, respectively, and the red light and the green light are mixed with the blue light penetrating the quantum dot layer 12 to generate white light. Also, the inventors found that the width of the failure region 121 of the quantum dot layer 12 is less than 4.7 mm.

Further, the display panel 20 includes a color filter substrate 21 and a color resist layer (not shown), and the color resist layer is disposed on the color filter substrate 21. Preferably, the color resist layer may be disposed on a side of the color filter substrate 21 facing the backlight module 10. The color filter substrate 21 includes a display region 211 and a non-display region 210 surrounding the display region 211, and further, the display region 211 of the color filter substrate 21 includes a central region 2112 and an edge region 2111 surrounding the central region 2112.

Referring to fig. 3, the color-resist layer includes a first color resist, and specifically, the color-resist layer includes a first color resist 221 disposed in the edge region 2111 and a first color resist 221' disposed in the central region 2112. The area of each first color resistor 221 disposed in the edge region 2111 is smaller than the area of each first color resistor 221' disposed in the central region 2112. As is known, the white light passes through the first color resistor to generate the first color emergent light, so that the first color resistor 221' of the central region 2112 of the color filter substrate 21 corresponding to the normal light emitting region 122 of the quantum dot layer 12 can normally filter the white light emitted by the backlight module to generate the first color light. Since the area of the first color resist 221 of the edge region 2111 of the color filter substrate 21 corresponding to the quantum dot layer 12 failure region 121 is smaller than the area of the first color resist 221' of the central region 2112, the amount of the first color resist 221 of the first color transmitted through the edge region 2111 by the light of the first color emitted from the light source system 11 is reduced. Specifically, the width of the edge region 2111 of the color filter substrate 21 is adapted to the width of the failure region 121 of the quantum dot layer 12, so as to improve the problem that the excessive light of the first color is transmitted out of the color filter substrate 21. More specifically, the width of the edge region 2111 is d, wherein d is greater than or equal to 0mm and less than or equal to 4.7 mm.

After the light of the first color emitted from the light source system 11 passes through the failure region 121 of the quantum dot layer 12, and is then emitted to the edge region 2111 of the color film substrate 21 in the display panel 20, since the area of the first color resists 221 disposed in the edge region 2111 is smaller than the area of each first color resist 221' disposed in the center region 2112, the amount of light of the first color transmitted through the edge region 2111 is reduced, and the problem that the display device emits the light of the first color at the edge region corresponding thereto is solved.

Preferably, referring to fig. 4A and 4B, an area of any one of the first color resists 221 disposed in the edge region 2111 is a first area, and a distance between any one of the first color resists 221 disposed in the edge region 2111 and the central region 2112 is a first distance; the first area is inversely related to the first distance. As can be seen from fig. 4A and 4B, the distances between the plurality of first color resistors 221 disposed in the edge region 2111 and the central region 2112 gradually increase, and the areas thereof gradually decrease, that is, the areas of the first color resistors 221 disposed in the edge region 2111 sequentially decrease along a first direction, which is a direction from the central region 2112 to the edge region 2111. Preferably, the areas of the first color resists 221 disposed in the same row or the same column of the edge region 2111 are equal. More preferably, the first color resists 221 disposed in the same row or the same column of the edge region 2111 have the same length and width. Referring to fig. 4A and 4B, the areas of the first color resists 221 disposed in the same row of the edge region 2111 are sequentially decreased, and the areas of the first color resists 221 in the same column are equal. The design process is simple and easy to realize.

Along the first direction, the areas of the first color resists 221 disposed in the edge region 2111 are sequentially decreased, which may be sequentially decreasing the widths of the first color resists 221, as shown in fig. 4A; it is also possible to decrease the length of the color resists 221 of the first color in sequence, as shown in fig. 4B. The specific manner of changing the area of the first color resist 221 disposed in the edge region 2111 is not limited in the present invention.

Since the failure density of the quantum dots in the failure region 121 of the quantum dot layer 12 is not uniform, the closer to the edge, the more the quantum dots fail, and the more the light of the first color reaches the color filter substrate 21, the first area is designed to be inversely related to the first distance. Instead of uniformly designing the first area as a certain small area, the aperture ratio can be ensured on the basis of effectively improving the problem that the display device emits light of the first color at the corresponding edge region 2111.

Optionally, the areas of the first color resists 221 'disposed in the central region 2112 are equal, and preferably, the first color resists 221' disposed in the central region 2112 have equal lengths and widths. Therefore, the first area is inversely related to the first distance, i.e., the ratio of the area of any first color filter 221 disposed in the edge region 2111 to the area of the first color filter 221' disposed in the central region 2112 is inversely related to the first distance. Specifically, the relation is satisfied:

y＝0.1716ln(x)+0.5848 (1)

wherein x is a first distance in mm; y is the ratio of the area of any first color filter 221 disposed in the edge region 2111 to the area of the first color filter 221' disposed in the center region 2112. The inventors found that when the relationship between the ratio of the area of any one of the first color resists 221 disposed in the edge region 2111 to the area of the first color resist 221 'disposed in the central region 2112 and the first distance satisfies the above relationship (1), the aperture ratio of the first color resist 221 in the edge region is not less than 55% of the aperture ratio of the first color resist 221' in the central region.

With continued reference to fig. 4A and 4B, in the prior art, the color resist layer further includes a second color resist 222/222 'and a third color resist 223/223'. Preferably, the areas of the second color resist 222 and the third color resist 223 disposed in the color filter substrate edge region 2111 are both larger than the area of the first color resist 211 disposed in the color filter substrate edge region 2111.

Optionally, the area of each second color resistor 222 disposed in the edge region 2111 of the color filter substrate is equal to the area of the second color resistor 222' disposed in the central region 2112; the area of each third color segment 223 disposed in the edge region 2111 is equal to the area of each third color segment 223' disposed in the central region 2112. Therefore, the second color resist 222 and the third color resist 223 disposed in the edge portion 2111 do not need to be changed, and the loss of the excessive aperture ratio can be avoided as much as possible.

Preferably, the light source system 11 includes a first color light source which is a blue light source, a first color resistor which is a blue color resistor, a second color resistor which is a green color resistor, and a third color resistor which is a red color resistor. The light source system 11 emits blue light to the quantum dot layer 12, the blue light excites the quantum dots in the normal light emitting region 122 of the quantum dot layer 12 to generate red light and green light, the red light and the green light are mixed with the blue light transmitted through the normal light emitting region 122 of the quantum dot layer 12 to generate white light, and the white light is irradiated to the display panel 20 and filtered through the color resist layer on the color filter substrate 21 to realize normal color display.

The light source system 11 emits blue light to the quantum dot layer 12, the quantum dots in the failure region 121 of the quantum dot layer 12 are excited by the blue light to generate a little red light and green light, most of the blue light penetrates through the failure region 121 of the quantum dot layer 12 and irradiates the display panel 20, and the red light and the green light which are deviated to blue are generated after passing through the red color resistor and the green color resistor arranged at the edge region 2111 of the color film substrate 21, because the area of the blue color resistor arranged at the edge region 2111 corresponding to the failure region 121 is small, the blue color resistor arranged at the edge region 2111 of the color film substrate can generate less blue light, and the mixed light of the red light and the green light which are deviated to blue and the less blue light can generate white light and realize normal color display.

Referring to fig. 5 and 6, fig. 5 and 6 are a schematic structural diagram of a display device and an arrangement diagram of color resistors in a local display area of a color filter substrate according to another embodiment of the present invention, respectively. In this embodiment, differences from the previous embodiment are mainly described, and the same points as those in the previous embodiment are not described again.

Specifically, the display device provided by the invention comprises a backlight module 10 and a display panel 20, wherein the display panel 20 is located at the light-emitting side of the backlight module 10. Alternatively, the display device provided by the present invention may be a passive light emitting display device, and the backlight module 10 provides a light source for displaying for the display panel 20.

Further, the backlight module 10 includes a light source system 11 and a quantum dot layer 12, wherein the quantum dot layer 12 is located between the light source system 11 and the display panel 20; the light source system 11 includes a first color light source 111 and a light guide plate 112, wherein the first color light source 111 is disposed on one side of the backlight module 10; the light of the first color emitted from the first color light source 111 is changed into the light of the first color which is uniform over the entire surface by the light guide plate 112, and then the light of the first color which is uniform over the entire surface irradiates and excites the quantum dot layer 12. The light source system 11 of the backlight module 10 includes other optical films such as a reflective sheet and a diffusion sheet, in addition to the first color light source 111 and the light guide plate 112, which is not limited in the present invention.

Further, the display panel 20 includes a color filter substrate 21 and a color resist layer (not shown), and the color resist layer is disposed on the color filter substrate 21. Preferably, the color resist layer may be disposed on a side of the color ink substrate 21 facing the backlight module 10. The color filter substrate 21 includes a display region 211 and a non-display region 210 surrounding the display region 211, and further, the display region 211 of the color filter substrate 21 includes a central region 2112 and an edge region 2111 surrounding the central region 2112. Specifically, the width of the edge region is less than or equal to 4.7 mm.

Referring to fig. 5, the edge region 2111 of the color filter substrate 21 includes an upper edge region, a lower edge region, a left edge region, and a right edge region. Wherein, the projection of the lower edge region on the backlight module 10 covers the first color light source 111; the upper edge area and the lower edge area are arranged oppositely, and the left edge area and the right edge area are respectively positioned on two sides of the upper edge area and the lower edge area. Specifically, the widths of the lower edge region, the upper edge region, the left edge region and the right edge region are d1, d2, d3 and d4, respectively, preferably, d1 is 4.6mm, d2, d3 and d4 is 2.2 mm. This is because the inventors found that the projection of the lower edge region on the backlight module 10 covers the first color light source 111, and therefore, the light intensity of the first color light corresponding to the lower edge region is stronger, and the width defined by the lower edge region is wider, that is, the area of the first color resistor 221 is more reduced along the direction from the central region 2112 to the lower edge region, and the area of the first color resistor 221 is smaller closer to the first color light source 111. Preferably, the area of the first color filter 221 near the first color light source 111 is smaller than the area of the first color filter 221 disposed at the upper edge, the left edge, and the right edge. The lower edge area is set to be wider, the transmission amount of the light of the first color of the lower edge area can be effectively reduced, the problem that the display device emits the light of the first color at the position corresponding to the lower edge area is solved, and therefore the problem that the display device emits the light of the first color at the position 2111 corresponding to the edge area is solved.

Alternatively, the areas of the first color resists 221 'disposed in the central region 2112 are equal, so that the ratio of the area of any first color resist 221 disposed in the lower edge region to the area of the first color resist 221' disposed in the central region 2112 is inversely related to the first distance. Specifically, the relation is satisfied:

y1＝0.1569 ln(x1)+0.5249 (2)

wherein x1 is a first distance corresponding to the first color resistor 221 disposed in the lower edge region, and the unit is mm; y1 is the ratio of the area of any first color filter 221 disposed in the lower edge region to the area of the first color filter 221' disposed in the central region 2112. The inventors have found that when the relational expression between the ratio of the area of any one of the first color resists 221 disposed at the lower edge region to the area of the first color resist 221 'disposed at the central region 2112 and the first distance satisfies the above relational expression (2), the aperture ratio of the first color resist 221 at the lower edge region is not less than 60% of the aperture ratio of the first color resist 221' at the central region.

Meanwhile, the ratio of the area of the first color resistor 221 disposed in the upper edge region, the left edge region, and the right edge region to the area of the first color resistor 221' disposed in the central region 2112 and the first distance may satisfy the relation (1) of the previous embodiment, so as to ensure that the aperture opening ratios of the upper edge region, the left edge region, and the right edge region are not less than 55% of the aperture opening ratio of the central region.

Since quantum dots in the quantum dot layer 12 failure region 121 are more severely failed closer to the edge and are more closely located to the first color light source 111, more light of the first color reaches the color filter substrate 21 and the area of the lower edge region of the color filter substrate 21 covered by more light of the first color is larger, the lower edge region is set to be wider, and the problem that the display device emits light of the first color at the position corresponding to the lower edge region can be effectively solved.

With continued reference to fig. 6, the color resist layer further includes a second color resist 222/222 ', and the area of the second color resist 222 disposed in the edge region 2111 is smaller than the area of the second color resist 222' disposed in the central region 2112. Preferably, the area of any second color filter 222 disposed in the edge region 2111 is inversely related to the distance from any second color filter 222 disposed in the edge region 2111 to the central region 2112.

When the area of the first color resist 221 disposed in the edge region 2111 is small to a certain extent, the light of the first color passing through the edge region 2111 cannot be controlled significantly any more, and at this time, the area of the second color resist 222 disposed in the edge region 2111 is designed to be small, and the light of the first color passing through the edge region 2111 can also be controlled.

Preferably, the area of the second color resistor 222, which may be disposed only in the lower edge region, is smaller than the area of the second color resistor 222' disposed in the central region 2112. More preferably, the ratio of the area of any second color resistor 222 disposed in the lower edge region to the area of the second color resistor 222' disposed in the central region 2112 is inversely related to the distance from the second color resistor 222 disposed in the lower edge region to the central region 2112. Specifically, the relation is satisfied:

y2＝0.046 ln(x2)+0.8547 (3)

wherein x2 is a first distance in mm corresponding to the second color resistor 222 disposed in the lower edge region; y2 is the ratio of the area of any second color filter 222 disposed in the lower edge region to the area of the second color filter 222' disposed in the central region 2112. The inventors have found that when the relationship between the ratio of the area of any one of the second color resists 222 disposed at the lower edge region to the area of the second color resist 222 'disposed at the central region 2112 and the first distance satisfies the above relationship (3), the aperture ratio of the second color resist 222 at the lower edge region is not less than 85% of the aperture ratio of the second color resist 222' at the central region.

Preferably, the areas of the first color resists 221 disposed in the same row or the same column of the edge region 2111 are equal; the areas of the first color resists 221 disposed in the same row or the same column of the edge region 2112 are equal. The design process is simple and easy to realize.

The color resist layer also includes a third color resist 223, as is known. Optionally, the area of each third color filter 223 disposed in the edge region 2111 is equal to the area of each third color filter 223' disposed in the central region 2112. Therefore, the third color resist 223 disposed in the edge region 2111 does not need to be changed, and the loss of the excessive aperture ratio can be avoided as much as possible.

Optionally, the area of each third color filter 223 disposed in the edge region 2111 is smaller than the area of each third color filter 223' disposed in the central region 2112. Alternatively, the area of each third color resist 223 disposed only in the lower edge region is smaller than the area of each third color resist 223' disposed in the central region 2112. Preferably, the area of any third color resistor 223 disposed in the lower edge region 2111 is inversely related to the distance from the third color resistor 223 disposed in the lower edge region 2111 to the central region 2112. This design also allows control of the light of the first color transmitted through the edge region 2111.

Preferably, the area of the second color resist 222 disposed in the color filter substrate edge region 2111 may be equal to or larger than the area of the first color resist 221 disposed in the color filter substrate edge region 2111. Preferably, the area of the third color resist 223 disposed in the edge region 2111 of the color filter substrate may be greater than or equal to the area of the first color resist 221 disposed in the edge region 2111 of the color filter substrate 21.

Preferably, the light source system 11 includes a blue light source 111, a blue color resistor as the first color resistor, a green color resistor as the second color resistor, and a red color resistor as the third color resistor. The light source system 11 emits blue light to the quantum dot layer 12, the blue light excites the quantum dots in the normal light emitting region 122 of the quantum dot layer 12 to generate red light and green light, the red light and the green light are mixed with the blue light penetrating through the normal light emitting region 122 of the quantum dot layer 12 to generate white light, and the white light irradiates the display panel 20 and is filtered by the color resistance layer on the color film substrate 21 to realize normal color display.

The light source system 11 emits blue light to the quantum dot layer 12, the quantum dots in the failure region 121 of the quantum dot layer 12 are excited by the blue light to generate no or little red light and green light, most of the blue light penetrates through the failure region 121 of the quantum dot layer 12 and irradiates the display panel 20, and the area of the blue color resistor arranged at the edge region 2111 of the color film substrate 21 is small, so that less blue light is generated by the blue color resistor arranged at the edge region 2111 of the color film substrate 21, and the problem that the display device emits the first color light at the corresponding edge region is solved. When the area of the green color resistance and/or the red color resistance disposed in the edge region 2111 is smaller than the area of the green color resistance or the red color resistance disposed in the central region 2112, the light of the first color transmitted through the edge region 2111 can be controlled to a certain extent.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a display device according to another embodiment of the invention. Specifically, the display device includes a backlight module 10 and a display panel 20. The display panel 20 includes, in addition to the color filter substrate 21 described in any of the above embodiments, an array substrate 23 and a liquid crystal layer (not shown), where the array substrate 23 is disposed opposite to the color filter substrate 21, and the liquid crystal layer is located between the array substrate 23 and the color filter substrate 21. The array substrate 23 is provided with a plurality of thin film transistors 231 arranged in a matrix, and each thin film transistor 231 corresponds to each of the first color resistor, the second color resistor and the third color resistor on the color filter substrate 21.

The backlight module 10 includes a light source system and a quantum dot layer located between the light source system and the display panel; the light source system comprises a first color light source. The display panel comprises a color film substrate and a color resistance layer arranged on the color film substrate, wherein the color resistance layer comprises a first color resistance. The display area of the color film substrate comprises a central area and an edge area surrounding the central area, wherein the area of each first color resistor arranged in the edge area is smaller than that of each first color resistor arranged in the central area.

Because the area of the first color resistors arranged in the edge area is smaller than the area of each first color resistor arranged in the central area, the transmission amount of the first color light in the edge area can be reduced, and the problem that the display device emits the first color light at the edge area corresponding to the display device is solved.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. The utility model provides a display device, includes, backlight unit and display panel, display panel is located backlight unit's light-emitting side, its characterized in that:

the backlight module comprises a light source system and a quantum dot layer, wherein the quantum dot layer is positioned between the light source system and the display panel; the light source system comprises a first color light source;

the display panel comprises a color film substrate and a color resistance layer, wherein the color resistance layer is arranged on the color film substrate; the display area of the color film substrate comprises a central area and an edge area surrounding the central area; the color resistance layer comprises a first color resistance, a second color resistance and a third color resistance;

the area of each first color resistance arranged in the edge area is smaller than that of each first color resistance arranged in the central area; the area of each second color resistance arranged in the edge area is smaller than that of each second color resistance arranged in the central area; the area of each third color resistance arranged in the edge area is smaller than that of each third color resistance arranged in the central area;

the area of any first color resistance arranged in the edge area is a first area, and the distance between any first color resistance arranged in the edge area and the central area is a first distance; the first area is inversely related to the first distance;

the first color light source is arranged on one side edge of the backlight module;

the edge region of the color film substrate comprises an upper edge region, a lower edge region, a left edge region and a right edge region; the projection of the lower edge area on the backlight module covers the first color light source; the upper edge area and the lower edge area are oppositely arranged, and the left edge area and the right edge area are respectively positioned at two sides of the upper edge area and the lower edge area;

the widths of the upper edge area, the left edge area and the right edge area are all equal to 2.2mm, and the width of the lower edge area is equal to 4.6 mm;

the ratio of the area of any second color resistor arranged in the lower edge area to the area of the second color resistor arranged in the central area is in negative correlation with the distance from the second color resistor arranged in the lower edge area to the central area; the area of any third color resistance arranged on the lower edge area is inversely related to the distance from the third color resistance arranged on the lower edge area to the central area.

2. The display device according to claim 1, wherein:

the first color light source is a blue light source, the first color resistor is a blue color resistor, the second color resistor is a green color resistor, and the third color resistor is a red color resistor.

3. The display device according to claim 1, wherein:

the display panel further comprises an array substrate and a liquid crystal layer, the array substrate is arranged opposite to the color film substrate, and the liquid crystal layer is positioned between the array substrate and the color film substrate;

the array substrate is provided with a plurality of thin film transistors which are arranged in a matrix mode, and each thin film transistor corresponds to each first color resistor, each second color resistor and each third color resistor one to one.