CN110187553B

CN110187553B - Display panel and display device

Info

Publication number: CN110187553B
Application number: CN201910579000.4A
Authority: CN
Inventors: 成刚; 罗帮虎; 周森
Original assignee: Tianma Microelectronics Co Ltd
Current assignee: Tianma Microelectronics Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2021-12-14
Anticipated expiration: 2039-06-28
Also published as: CN110187553A

Abstract

The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises: the color film is arranged on the light incidence side surface of the black and white display screen; the black-and-white display screen comprises at least one preset display icon; the color film comprises at least one color film block, and the color film block covers at least one preset display icon. The technical scheme provided by the embodiment of the invention can ensure the manufacturing yield of the display panel and simultaneously has better color display effect.

Description

Display panel and display device

Technical Field

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

Background

Currently, Liquid Crystal Display (LCD) technology is widely used in Display devices such as televisions, mobile phones, calculators, air conditioner remote controllers, and instrument panels for vehicle Display, as one of the mainstream Display technologies. In order to control the cost, the vehicle-mounted liquid crystal display device usually adopts a black and white liquid crystal display screen, or a black and white display screen. The black and white display screen can only display black and white, and cannot realize color display.

Generally, in order to realize color display of the vehicle-mounted liquid crystal display device, a color film layer can be deposited on one side of a lower polarizer of a black-and-white display screen, but the mode easily causes that the lower polarizer has a high associated rejection rate. In order to reduce the rejection rate and improve the product manufacturing yield, a color film can be attached to the light-emitting surface of the black-and-white display screen, but the color film is visible in appearance in the mode, so that the color display effect is poor.

Disclosure of Invention

The invention provides a display panel and a display device, which are used for improving the color display effect of the display panel while ensuring the manufacturing yield of the display panel.

In a first aspect, an embodiment of the present invention provides a display panel, including: the color film is arranged on the light incidence side surface of the black and white display screen;

the black-and-white display screen comprises at least one preset display icon;

the colored film comprises at least one colored film block, and the colored film block covers at least one preset display icon.

In a second aspect, embodiments of the present invention further provide a display device, where the display device includes any one of the display panels provided in the first aspect.

According to the display panel provided by the embodiment of the invention, the independent color films are arranged and the color films are arranged on the light incidence side of the black-and-white display screen, so that on one hand, the black-and-white display screen and the color films can be manufactured independently, and the respective manufacturing yield of the black-and-white display screen and the color films is favorably ensured, thereby being favorable for ensuring the manufacturing yield of the display panel; on the other hand, the color film is arranged on the light incident side of the black-and-white display screen, and the light emergent side opposite to the light incident side of the black-and-white display screen is usually the side on which a user observes a display picture of the display panel, so that the color film can be far away from the light emergent side of the black-and-white display screen, the user cannot easily and directly observe the appearance of the color film, and the color display effect of the display panel is improved.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a color film in a display panel according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another color film in a display panel according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 8 is an enlarged schematic diagram of the SQ1 area in FIG. 7;

FIG. 9 is a schematic cross-sectional view taken along line C1-C2 in FIG. 7;

fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the invention;

fig. 13 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the present invention;

fig. 14 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the invention;

fig. 15 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view of the display panel along C3-C4 in FIG. 15;

fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the conventional technology, in order to realize color display of a black-and-white display screen, a color film layer is usually deposited on one side of a lower polarizer or the upper surface of the black-and-white display screen, that is, a structure in which a light-emitting sheet is attached to a color film is adopted.

In the structure, the color film block is directly formed on the surface of the lower polarizer, so that the lower polarizer has higher scrap rate and cost is increased. Secondly, when the color diaphragm is formed by adopting color silk-screen printing, as the maximum execution of three silk-screen printing processes ensures that the display panel has less displayable colors and monotonous colors. Secondly, the silk-screen shape can only be made into simple square and circular arc shapes, and the shape is single. Thirdly, the gradient graphics cannot be made, and the stereoscopic effect cannot be displayed. Finally, the display panel has a problem that the ground color is bluish.

In another structure of a display panel in the conventional technology, a color film may be directly attached to the surface of the upper polarizer, and at this time, the appearance of the color film is the final appearance of the display panel, so that the appearance of the color film may be superimposed on the display screen, thereby affecting the color display effect. Secondly, the color film blocks in the color film can be directly observed; therefore, when the display of multiple colors is realized, the transition between different colors of the colorful film can be seen by naked eyes, and the colorful display effect and the attractiveness are also influenced. Third, the color film is usually attached to the surface of the upper polarizer to ensure high display brightness and display definition, but this is likely to cause the problem of bubbles in the attachment. Finally, the structure also cannot display a stereoscopic effect.

Embodiments of the present invention provide a display panel to solve one or more of the above problems. The display panel provided by the embodiment of the invention is exemplarily described below with reference to fig. 1 to 16.

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a color film in the display panel according to the embodiment of the present invention. Referring to fig. 1 and 2, the display panel 10 includes: the display device comprises a black-and-white display screen 110 and a color film 140, wherein the color film 140 is arranged on the light incident side surface of the black-and-white display screen 110; the black-and-white display screen 110 includes at least one preset display icon 121; the colored film 140 includes at least one colored film 142, and the colored film 142 covers at least one preset display icon 121.

The black and white display screen 110 is used for displaying preset display icons. After the color film block 142 is formed on one side of the color film 140 by using a color realization technique, such as a silk-screen technique, the color film 140 is disposed on the light-incident side surface of the black-and-white display screen 110. Therefore, after the light passes through the color film 140, the light is combined with the preset display icon 121 of the black-and-white display screen 110 to realize a color display effect.

For example, the black-and-white display screen 110 may be a liquid crystal display screen or other types of display screens known to those skilled in the art that can implement black-and-white display, and the embodiment of the invention is not limited thereto.

For example, the forming process of the color film block 142 in the color film 140 may include spraying, silk-screening, or other processes known to those skilled in the art, and the embodiment of the invention is not limited thereto.

In the structure of the display panel 10, the color film 140 and the black-and-white display screen 110 are respectively independent, and the color film 140 is arranged on the light incident side of the black-and-white display screen 110, so that on one hand, the black-and-white display screen 110 and the color film 140 can be respectively manufactured independently, which is beneficial to ensuring the respective manufacturing yield of the black-and-white display screen 110 and the color film 140, and thus, the display panel 10 has higher manufacturing yield; on the other hand, the color film 140 is disposed on the light incident side of the black-and-white display screen 140, and the light emitting side opposite to the light incident side of the black-and-white display screen 140 is usually the side where the user observes the display image of the display panel, so that the color film 140 can be away from the light emitting side of the black-and-white display screen 110, and the user cannot directly observe the appearance of the color film 140, thereby facilitating to improve the color display effect of the display panel 10.

In addition, by disposing the color film block 142 to cover at least one preset display icon 121, the at least one preset display icon 121 covered by the color film block 142 can realize complete color display.

It should be noted that fig. 1 only exemplarily shows that the black-and-white display screen 110 includes six preset display icons 121, and fig. 1 and fig. 2 only exemplarily show that the color film 140 includes six color film blocks 142, which do not constitute a limitation to the display panel 10 provided in the embodiment of the present invention. In other embodiments, the number of the preset display icons 121 in the black-and-white display screen 110 and the number of the color film pieces 142 in the color film 140 may be set according to actual requirements of the display panel 10, and the number of the preset display icons 121 and the number of the color film pieces 140 may be the same or different.

Optionally, fig. 3 is a schematic structural diagram of another color film in the display panel provided in the embodiment of the present invention, and fig. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. Referring to fig. 3 and 4, the color film 140 further includes a black light-shielding layer 143, the black light-shielding layer 143 including at least one opening 144; the opening 144 includes a first opening 1441 and/or a second opening 1442; the color film block 142 is disposed in the first opening 1441, and the color film block 142 completely covers the first opening 1441; the second opening 1442 exposes at least one preset display icon 121.

The black light-shielding layer 143 is used for shielding light, and can shield light corresponding to a non-display area of the black-and-white display screen, which is beneficial to improving the problem of blue bottom color, and thus is beneficial to improving the display effect of the display panel 10.

A color film block 1442 completely covering the first opening 1441 is disposed in the first opening 1441, so that a color display effect can be achieved at a position corresponding to the first opening 1441.

The color film block 142 is not disposed in the second opening 1442, that is, the second opening 1442 allows light to pass directly through and exit through the preset display icon 121 in the black-and-white display screen, so that a white display effect can be achieved at a position corresponding to the second opening 1442.

It should be noted that fig. 3 only exemplarily shows that the black light-shielding layer 143 includes six openings 144, specifically includes four first openings 1441 and two second openings 1442, but is not limited to the color film 140 in the display panel provided in the embodiment of the present invention. In other embodiments, the number and shape of the openings 144 in the black light-shielding layer 143 and the number and shape of the first and

second openings

1441 and 1442 therein may also be set according to the actual requirements of the display panel, which is not limited by the embodiment of the present invention.

Optionally, with continued reference to FIG. 4, the distance A1 between the edge of the preset display icon 121 within the opening 144 and the edge of the opening 144 satisfies A1 ≧ 0.45 mm.

With such an arrangement, the width of the opening 144 beyond the edge of the preset display icon 121 is greater than 0.45mm, so that the black shading layer can be prevented from shading part of the preset display icon 121 to make the preset display icon 121 defective, that is, the display integrity of the preset display icon 121 can be ensured.

In other embodiments, a1 ≧ 0.50mm, a1 ≧ 0.65mm, or other numerical ranges may be provided, which are not limited by the examples of the present invention.

Optionally, with continued reference to fig. 4, the vertical projection of the color film 140 on the black-and-white display screen 110 is located inside the black-and-white display screen 110, and the distance a2 between the edge of the color film 140 and the edge of the black-and-white display screen 110 satisfies a requirement that a2 is greater than or equal to 0.20 mm.

By such arrangement, the overall size of the color film 140 is smaller than that of the black-and-white display screen 110, which is beneficial to preventing the problem of over-size or unqualified assembly caused by the color film 140 exceeding the size of the black-and-white display screen 110.

In other embodiments, a2 ≧ 0.30mm, a2 ≧ 0.35mm, or other numerical ranges may be provided, which are not limited by the examples of the present invention.

Optionally, fig. 5 is a schematic structural diagram of another display panel provided in an embodiment of the present invention. Referring to FIG. 5, the distance A3 between the edge of the preset display icon 121 covered by the color film block 142 and the edge of the color film block 142 satisfies A3 ≧ 0.45 mm.

So set up, can make the unilateral width that exceeds preset display icon 121 of color film piece 142 be greater than 0.45mm for complete preset display icon 121 is in the scope that color film piece 142 covered, thereby avoids because the part of presetting display icon 121 is for laminating color film piece 142 and the local problem that shows that icon 121 is partial to show the colour that leads to, and local no colour. Thus, it is advantageous to ensure that the preset display icon 121 completely realizes the color display effect.

Optionally, A3 is more than or equal to 0.80 mm.

By the arrangement, the color cross problem caused by a large visual angle can be avoided. Cross-color refers to a ghost image between different colors, and a general large viewing angle may refer to a viewing angle of 45 degrees or more, and a specific viewing angle range may depend on a specific application scenario of the display panel 10. In other embodiments, the larger the viewing angle, the larger the value of the one side of the color film block 142 beyond the width a3 of the preset display icon 121.

For example, with reference to fig. 5, when the display colors are the same and the positions of the preset display icons 121 are adjacent, the whole color film block 142 may cover the adjacent preset display icons 121, so as to increase the area of the color film block 142 and reduce the manufacturing difficulty thereof.

In other embodiments, if the display colors of the adjacent preset display icons are all white, the corresponding adjacent preset display icons 121 can be exposed by using a complete hollow area (i.e., the second opening on the black light-shielding layer), so as to increase the opening area and facilitate reducing the difficulty in forming the opening.

It should be noted that, in the embodiment of the present invention, the "adjacent" is not limited to a specific numerical range, and may be set according to the actual display requirement and the manufacturing process of the display panel 10.

Optionally, fig. 6 is a schematic structural diagram of another display panel provided in an embodiment of the present invention, which illustrates, by taking an instrument panel in a vehicle-mounted display device as an example, structures of the black-and-white display screen 110 and the color film 140 when the display panel 10 can display a plurality of different colors and white colors. Referring to fig. 6, the black-and-white display screen 110 includes a plurality of preset display icons 121, such as: circular arc dial, scale value, rotation speed, oil quantity and the like. The color film includes a black light-shielding layer 143 and a plurality of color film blocks 142. The black area in the color film 140 represents the black light-shielding layer 143, the white unfilled area represents the second opening area 1442, and the filled area represents the color film 142. Wherein different fill patterns may represent different colors for the color film pieces 142. Illustratively, the right diagonal fill represents blue, the left diagonal fill represents orange, and the cross diagonal fill represents red. Thus, the display panel 10 formed by attaching the color film 140 to the black-and-white display screen 110 can display the blue, orange, red and white predetermined display icons 121.

In other embodiments, the color film 140 may further have a plurality of color film blocks 142 with other colors, and the number, color, shape, and arrangement of the color film blocks 142 and the number, shape, and arrangement of the second openings 1442 are not limited in the present invention, and may be set according to the actual requirements of the display panel 10.

For example, the color film pieces 142 in the color film 140 may have more than 8 different colors, and the stereoscopic display effect may be achieved by matching the different colors.

It should be understood that the stereoscopic display effect in the embodiment of the present invention is not generated by parallax, but is represented by a shadow formed by a shade gradation. This is exemplified below in connection with fig. 7-9.

Optionally, fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 1 and 7, the color film 140 includes a stereoscopic display region 145, and light transmittances of the color films 142 in the stereoscopic display region 145 are sequentially decreased in a preset direction.

Wherein, the smaller the light transmittance, the smaller the amount of the light signal that can be received by the eyes of the user, i.e. the darker the screen display brightness. The light transmittance is set to be reduced along the preset direction in sequence, so that the brightness of a display picture can be gradually darkened from bright, and the stereoscopic display effect of gradual brightness change or gradual color change can be realized by combining the shape of a specific preset display icon.

The preset direction may be any direction in the plane of the color film 140, and the straight lines in the preset direction may be different in different areas. For example, for the semicircular instrument panel shown in fig. 7, the central line area of the semicircular outline is set to be an area with higher brightness, and in the semicircular shape, the preset direction is a direction toward the center of the semicircular shape; outside the semicircle, the preset direction is the direction deviating from the circle center of the semicircle. The background color has low brightness, namely, the brightness is gradually reduced along the direction towards the center of the circle or away from the center of the circle from the center line, and the display effect that the center line area is convex upwards can be formed, so that the semicircular outline can realize three-dimensional display.

In other embodiments, by combining the above-mentioned variation tendency of the light transmittance with the color film in the color film, a color stereoscopic display can also be realized.

For example, in combination with the above, for the preset display icon area on the black and white display screen, various color displays such as red, green, blue or gray can be finally realized by combining the colors of the color film blocks in the color film. In an embodiment, the color shade of the color film block can be set so as to realize the change of the shade of the display color, thereby achieving the purpose of color gradual change. The pattern of the color film block is adjusted to be matched with the preset display icon in the black and white display screen to form a shadow, so that the effect of three-dimensional display can be realized.

Optionally, with reference to fig. 7, the color film block is formed by a silk-screen process; in the stereoscopic display region 145, the amount of ink of the color film blocks per unit area increases in sequence in a predetermined direction.

The more the amount of ink in the color film block in a unit area is, the stronger the light absorption capability is, and the smaller the light transmittance is, so that the light transmittance of the color film block 142 in the stereoscopic display area 145 can be sequentially reduced along a preset direction, and a stereoscopic display effect can be realized.

Alternatively, the scheme may also realize that the display color of the stereoscopic display area 145 gradually changes from white to red. Illustratively, the gradual change effect of white to red observed by naked eyes can be achieved by gradually changing the transparent color from white to red and from pre-baking to deep red in the process of gradually increasing the amount of the ink from no ink to any ink. It is understood that red in this paragraph is merely an example, and in other embodiments, changing from white to other colors may also be implemented, which is not limited by the embodiment of the present invention.

Exemplarily, fig. 8 is an enlarged structure diagram of SQ1 area in fig. 7. Referring to fig. 8, in the stereoscopic display region 145, the ink laying area of the color film patches 142 per unit area sequentially increases in a preset direction. Illustratively, the predetermined direction is a direction from the opening area 144 to the area of the black light-shielding layer 143. So, can realize that printing ink volume increases along predetermineeing the direction in proper order to the luminousness reduces along predetermineeing the direction in proper order, through the combination of bright dark display effect, realizes three-dimensional display effect.

Illustratively, FIG. 9 is a schematic view of a cross-sectional view taken along line C1-C2 of FIG. 7. Referring to fig. 9, in the stereoscopic display region 145, the ink laying thickness of the color film patches 142 per unit area sequentially increases in a preset direction. Illustratively, the predetermined direction is a direction from the opening area 144 to the area of the black light-shielding layer 143. So, can realize that printing ink volume increases along predetermineeing the direction in proper order to the luminousness reduces along predetermineeing the direction in proper order, through the combination of bright dark display effect, realizes three-dimensional display effect.

Optionally, for the area where the preset display icon is located, the driving voltage may be controlled by the integrated driving circuit, so as to realize display of different gray scales. For example, dividing a complete preset display icon into several partitions with smaller areas can reduce the transmittance of one or several partitions in the preset display icon area, i.e., reduce the display brightness, thereby achieving the change of the color from dark to light and the display from light to dark.

It should be noted that the gradation of gray scale controlled by the integrated driving circuit is usually a stepwise change, and cannot exhibit the gradation effect.

Different display effects can be realized by combining the gradual change effect realized by the color film with the gray scale step change realized by the black and white display screen. For example, the vehicle-mounted display device may display that the battery is charged from no electricity to full electricity, the oil amount is decreased, the speed is increased to a red alarm by the speed meter panel, or other display effects known to those skilled in the art are realized, which is not limited in the embodiment of the present invention.

Optionally, the light-transmitting color of the color film block includes at least one of red, green, blue, gray, and yellow.

Thus, at least one color display can be realized by using the color film.

In other embodiments, the color of the color film block may be other colors known to those skilled in the art, and the embodiment of the invention is not limited thereto.

Optionally, the display panel may also display numbers. In the following, referring to fig. 7, 10 and 11, the structure of the display panel corresponding to displaying arabic numerals will be exemplarily described by taking the numeral "0" as an example.

Optionally, fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 7 and 10, a portion of the preset display icons 121 in the black-and-white display screen 110 includes a central display area 1211 and a peripheral display area 1212 surrounding the central display area 1211; a non-display gap 1213 is provided between the central display area 1211 and the peripheral display area 1212.

Illustratively, the non-display gaps 1213 correspond to contours that form arabic numerals to be displayed when displayed. For example, the non-display gap 1213 may be displayed in black, the central display area 1211 may be displayed in white, and the peripheral display area 1212 may be displayed in white or a gradient color.

Thus, the black-and-white display screen 110 can form the graphics of the arabic numerals to be displayed.

Optionally, with continued reference to fig. 10, the color film block 140 includes an auxiliary hollowed-out area 146; an edge contour 1460 (shown in dashed lines in fig. 10) of the auxiliary hollow-out region 146 is disposed between the inner contour 12131 and the outer contour 12132 of the non-display gap 1213.

In this way, the edge contour 1460 of the auxiliary hollow-out region 146 is completely covered by the non-display gap 1213, so that the auxiliary hollow-out region 146 does not exceed the contour of the number, thereby avoiding the ghost problem. On the other hand, the problem that the figure is partially blocked due to the contour of the auxiliary hollow-out region 146 falling in the central display region 1211 can be avoided, thereby being beneficial to ensuring the integrity of the figure display.

Optionally, with continued reference to fig. 10, the distance a4 between the edge contour 1460 of the auxiliary hollow-out area 146 and the inner contour 12131 of the non-display gap 1213 satisfies: a4 is greater than or equal to 0.2 mm.

With such an arrangement, the problem of defective display numbers due to the central display area 1211 being blocked after the attachment deviation can be prevented, which is beneficial to ensuring the integrity of the digital display.

Optionally, fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 11, the color film sheet 140 further includes an auxiliary light blocking pattern 147, and edge contour lines (not shown in fig. 11) of the auxiliary hollow areas 146 are disposed between the outer contour line 1472 and the inner contour line 1471 of the auxiliary light blocking pattern 147; the auxiliary light-shielding pattern 147 covers the non-display gap 1213.

At this time, the inner contour line displaying the number is not the inner contour line of the non-display gap 1213 but the inner contour line of the auxiliary light-shielding pattern 147; also, the outer contour lines of the display numerals are not the outer contour lines of the display spaces 1213 but the outer contour lines of the auxiliary light-shielding patterns 147.

The edge contour line of the auxiliary hollow-out area 146 is disposed between the outer contour line 1472 and the inner contour line 1471 of the auxiliary light-shielding pattern 147, so that digital ghosting or damage can be avoided, and display integrity of digital display can be ensured.

Alternatively, with continued reference to fig. 11, the distance a5 between the inner contour of the auxiliary shading pattern 147 and the inner contour of the non-display gap 1213 satisfies: a5 is more than or equal to 0.2 mm; the interval a6 between the outer contour line of the auxiliary light blocking pattern 147 and the outer contour line of the non-display gap 1213 satisfies: a6 is greater than or equal to 0.2 mm.

Optionally, fig. 12 is a schematic cross-sectional structure diagram of another display panel according to an embodiment of the present invention. Referring to fig. 12, the black-and-white display panel 110 includes a first substrate 111 and a second substrate 112 disposed opposite to each other, and a liquid crystal layer 113 between the first substrate 111 and the second substrate 112; a first electrode layer is arranged on the surface of one side of the first substrate 111 facing the second substrate 112, and a second electrode layer is arranged on the surface of the second substrate 112 facing the first substrate 111; the first electrode layer includes a plurality of first electrodes 1110 having a first predetermined pattern, and the second electrode layer includes a plurality of second electrodes 1120 having a second predetermined pattern; the overlapping area of the first electrode 1110 and the second electrode 1120 defines a predetermined display icon 121.

The liquid crystal molecules in the liquid crystal layer 113 are deflected under the action of the voltage difference between the first electrode 1110 and the second electrode 1120, so that light rays can be allowed to exit, and the display of the preset display icon is realized.

Optionally, fig. 13 is a schematic cross-sectional structure diagram of another display panel according to an embodiment of the present invention. Referring to fig. 13, the black-and-white display panel 110 further includes a first polarizer 114 and a second polarizer 115, and the polarization direction of the first polarizer 114 is perpendicular to the polarization direction of the second polarizer 115; the first polarizer 114 is disposed on a side of the first substrate 111 facing away from the second substrate 112, and the second polarizer 115 is disposed on a side of the second substrate 112 facing away from the first substrate 111; the color film 140 is disposed on a side of the second polarizer 115 facing away from the second substrate 112.

The polarization direction of the first polarizer 114 and the polarization direction of the second polarizer 115 are 90 degrees, and no light passes through the polarizers under the condition of no electricity; after the black-and-white display screen is powered on, liquid crystal molecules in the liquid crystal layer 113 deflect by 90 degrees, and light can exit through the preset display icon 121, so that display is realized.

Optionally, fig. 14 is a schematic cross-sectional structure view of another display panel provided in an embodiment of the present invention. Referring to fig. 14, the display panel 10 further includes an adhesive layer 150; the adhesive layer 150 is used to adhere the color film 140 to the light incident side surface of the black-and-white display panel 110.

The color film 140 is bonded to the light incident surface of the black-and-white display screen 110 by the bonding layer 150, so that the color film 140 can be fixed simply and conveniently.

For example, the material of the adhesive layer 150 may include a heat-curable adhesive, a photo-curable adhesive double-sided adhesive, or other types of adhesive materials known to those skilled in the art, and the embodiment of the invention is not limited thereto.

In other embodiments, the color film 140 may be fixed on the light incident surface of the black-and-white display screen 110 by a fixing structure.

Optionally, fig. 15 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 16 is a schematic structural cross-sectional diagram of the display panel along C3-C4 in fig. 15. Referring to fig. 15 and 16, the edge of the color film 140 is fixed to the light incident side surface of the black-and-white display panel 110 by an adhesive layer 150.

That is, the frame pasting method can be adopted, and only the edge of the color film 140 is pasted with the light incident side surface of the black-and-white display screen 110, which is beneficial to saving the material of the bonding layer 150; meanwhile, the problem that the fit bubbles are easy to generate when the adhesive tape is completely attached can be avoided; and thirdly, the absorption of the adhesive material to light rays can be avoided during the comprehensive adhesive tape sticking, so that the light transmittance can be improved, and the display effect of the display panel can be improved.

On the basis of the foregoing embodiments, an embodiment of the present invention further provides a display device, and fig. 17 is a schematic structural diagram of the display device according to the embodiment of the present invention. Referring to fig. 17, the display device 20 includes the display panel 10 in the foregoing embodiment, and thus the display device 20 provided in the embodiment of the present invention also has the beneficial effects described in the foregoing embodiment, which are not described again here.

For example, the display device 20 may further include a backlight module 210; the backlight module 210 is disposed on a side of the color film 140 away from the black-and-white display screen 110. The light emitted from the backlight module 210 sequentially passes through the color film 140 and the black-and-white display screen 110 and then is emitted, so as to realize the color display effect.

Wherein, the direction Z represents the emitting direction of the light.

For example, the display device 20 may include a mobile phone, a computer, a smart wearable device, an air conditioner remote controller, a television remote controller, a vehicle-mounted display panel, and other types of display devices known to those skilled in the art, which is not limited by the embodiments of the present invention.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, comprising: the color film is arranged on the light incidence side surface of the black and white display screen;

the black-and-white display screen comprises at least one preset display icon;

the color film comprises at least one color film block, and the color film block covers at least one preset display icon;

the black-and-white display screen comprises a first substrate and a second substrate which are oppositely arranged, and a liquid crystal layer positioned between the first substrate and the second substrate;

the display panel further comprises a first polarizer and a second polarizer, and the polarization direction of the first polarizer is vertical to that of the second polarizer;

the first polaroid is arranged on one side of the first substrate, which is far away from the second substrate, and the second polaroid is arranged on one side of the second substrate, which is far away from the first substrate;

the color film is arranged on one side of the second polarizer, which is deviated from the second substrate.

2. The display panel according to claim 1, wherein the color film further comprises a black light-shielding layer including at least one opening; the opening comprises a first opening and/or a second opening;

the color film block is arranged in the first opening and completely covers the first opening; the second opening exposes at least one preset display icon.

3. The display panel according to claim 2, wherein a distance A1 between an edge of the preset display icon in the opening and an edge of the opening satisfies A1 ≧ 0.45 mm.

4. The display panel of claim 1, wherein the vertical projection of the color film on the black-and-white display screen is located in the black-and-white display screen, and the distance A2 between the edge of the color film and the edge of the black-and-white display screen satisfies A2 ≥ 0.20 mm.

5. The display panel of claim 1, wherein the distance A3 between the edge of the preset display icon covered by the color film block and the edge of the color film block satisfies A3 ≧ 0.45 mm.

6. The display panel of claim 5, wherein A3 is 0.80mm or more.

7. The display panel of claim 1, wherein the color film comprises a stereoscopic display area, and the light transmittance of the color film in the stereoscopic display area decreases sequentially along a predetermined direction.

8. The display panel of claim 7, wherein the color film blocks are formed by a screen printing process;

in the three-dimensional display area, the ink amount of the color film blocks in a unit area is increased in sequence along a preset direction.

9. The display panel according to claim 8, wherein in the stereoscopic display region, ink laying areas of the color film pieces per unit area are sequentially increased in a preset direction.

10. The display panel according to claim 8, wherein the ink laying thickness of the color film blocks per unit area in the stereoscopic display region is sequentially increased in a preset direction.

11. The display panel of claim 1, wherein the light transmissive color of the color film block comprises at least one of red, green, blue, gray, and yellow.

12. The display panel according to claim 1, wherein a part of the preset display icons includes a central display area and a peripheral display area surrounding the central display area; a non-display gap is formed between the central display area and the peripheral display area.

13. The display panel according to claim 12, wherein the color film block includes an auxiliary hollow area; the edge contour line of the auxiliary hollow-out area is arranged between the inner contour line and the outer contour line of the non-display gap.

14. The display panel of claim 13, wherein a distance a4 between an edge contour of the auxiliary hollow-out area and an inner contour of the non-display gap satisfies: a4 is greater than or equal to 0.2 mm.

15. The display panel according to claim 13, wherein the color film further comprises an auxiliary light-shielding pattern, and an edge contour line of the auxiliary hollow-out region is disposed between an outer contour line and an inner contour line of the auxiliary light-shielding pattern;

the auxiliary light-shielding pattern covers the non-display gap.

16. The display panel according to claim 15, wherein a distance a5 between an inner contour of the auxiliary light shielding pattern and an inner contour of the non-display gap satisfies: a5 is more than or equal to 0.2 mm; an interval a6 between the outer contour line of the auxiliary light shielding pattern and the outer contour line of the non-display gap satisfies: a6 is greater than or equal to 0.2 mm.

17. The display panel according to claim 1,

a first electrode layer is arranged on the surface of one side, facing the second substrate, of the first substrate, and a second electrode layer is arranged on the surface, facing the first substrate, of the second substrate; the first electrode layer comprises a plurality of first electrodes with first preset patterns, and the second electrode layer comprises a plurality of second electrodes with second preset patterns; the overlapping area of the first electrode and the second electrode defines the preset display icon.

18. The display panel according to claim 1, further comprising an adhesive layer;

the bonding layer is used for bonding the color film to the light incidence side surface of the black-and-white display screen.

19. The display panel of claim 18, wherein the edge of the color film is fixed to the light incident side surface of the black-and-white display screen by the adhesive layer.

20. A display device comprising the display panel of any one of claims 1-19, and further comprising a backlight module;

the backlight module is arranged on one side of the color film sheet, which is far away from the black-and-white display screen.