CN213182255U - Backlight source, display screen and electronic product - Google Patents
Backlight source, display screen and electronic product Download PDFInfo
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- CN213182255U CN213182255U CN202021825896.4U CN202021825896U CN213182255U CN 213182255 U CN213182255 U CN 213182255U CN 202021825896 U CN202021825896 U CN 202021825896U CN 213182255 U CN213182255 U CN 213182255U
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Abstract
The utility model discloses a light source, display screen and electronic product are shaded, wherein the light source that is shaded includes: a plurality of bicolor chips arranged in a row; the two light emitting diodes of each bicolor chip in the bicolor chips are arranged perpendicular to the light incident side of the light guide plate, and the light emitting diodes on the side close to the light guide plate between the adjacent bicolor chips are arranged in a color staggered mode. Therefore, two rows of LED rows with staggered colors can be obtained, light mixing at each position in the light emitting range of the backlight source is uniform, the light emitting effect of the backlight source is improved, and the watching experience of a user is improved.
Description
Technical Field
The embodiment of the utility model provides a relate to and show technical field, especially relate to a light source, display screen and electronic product are shaded.
Background
At present, a liquid crystal display screen includes a transparent panel with a picture, and since the transparent panel itself does not emit light, imaging requires another intuitively important component, i.e., a backlight source. When the picture of the transparent panel changes, the backlight source provides light for the transparent panel, and a user can see a dynamic and bright picture.
The two-color chip may be used as a backlight source of the display screen, and excites red or yellow phosphor by using blue Light emitted from a blue Light Emitting Diode (LED) to make the phosphor emit Light, and then the blue Light, the Light emitted from the phosphor, and green Light emitted from a green LED are mixed to obtain white Light, so as to provide white backlight for the display screen.
In the prior art, the arrangement of the dual-color chips as the backlight light source is usually that the light emitting diodes of the multiple dual-color chips are horizontally arranged in a row. The disadvantages of the prior art include, at least, that the LEDs arranged at the corners emit light that is not well mixed with other colors, and corner color cast is likely to occur, so that the light emitting effect of the backlight source is reduced, and the viewing experience of the user is responded.
Disclosure of Invention
In view of this, the utility model provides a light source, display screen and electronic product in a poor light can guarantee that each position department all mixes the light evenly in the luminous scope of light source, has improved the luminous effect of light source in a poor light, has promoted the user and has watched experience.
In a first aspect, an embodiment of the present invention provides a backlight source, including: a plurality of bicolor chips arranged in a row;
the two light emitting diodes of each bicolor chip in the bicolor chips are perpendicular to the light incident side of the light guide plate, and the light emitting diodes close to the side of the light guide plate between the adjacent bicolor chips are arranged in a color staggered mode.
Optionally, the connection mode of the multiple bicolor chips includes:
and connecting the plurality of bicolor chips by adopting a lead according to the conduction direction of the bicolor chips.
Optionally, the connection mode of the multiple bicolor chips further includes:
dividing the plurality of bicolor chips into two groups according to the colors of the light emitting diodes close to the side of the light guide plate;
and according to the conduction direction of the double-color chips, two wires are adopted to respectively connect the two groups of double-color chips.
Optionally, the light incident side of the light guide plate includes at least one side, and when the light incident side of the light guide plate includes an adjacent light incident side, colors of the light emitting diodes near the light guide plate side are different between adjacent bicolor chips arranged on the adjacent light incident side.
In a second aspect, an embodiment of the present invention provides a display screen, including: the embodiment of the utility model provides an arbitrary backlight source and light guide plate.
Optionally, the light guide plate is silk-screened with complementary color ink dots according to the color cast state of the backlight light source.
Optionally, a complementary color reflecting sheet is attached to the light guide plate according to the color cast state of the backlight light source.
In a third aspect, an embodiment of the present invention provides an electronic product, including: the embodiment of the utility model provides an arbitrary display screen.
The embodiment of the utility model provides a light source, display screen and electronic product are shaded, wherein the light source in a poor light includes: a plurality of bicolor chips arranged in a row; the two light emitting diodes of each bicolor chip in the bicolor chips are arranged perpendicular to the light incident side of the light guide plate, and the light emitting diodes on the side close to the light guide plate between the adjacent bicolor chips are arranged in a color staggered mode. Therefore, two rows of LED rows with staggered colors can be obtained, light mixing at each position in the light emitting range of the backlight source is uniform, the light emitting effect of the backlight source is improved, and the watching experience of a user is improved.
Drawings
Fig. 1 is a schematic structural diagram of a backlight source according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a connection mode of a dual-color chip in a backlight source according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of printing ink dot screen printing and reflector attachment of a display screen 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.
Example one
Fig. 1 is a schematic structural diagram of a backlight source according to an embodiment of the present invention. Referring to fig. 1, the embodiment of the present invention provides a backlight source 10, including: a plurality of bicolor chips 11 arranged in a line;
two light emitting diodes of each bicolor chip 11 in the plurality of bicolor chips 11 are arranged perpendicular to the light incident side of the light guide plate 20, and the light emitting diodes on the side close to the light guide plate 20 between the adjacent bicolor chips are arranged in a color staggered manner.
According to the arrangement position of the backlight source, the backlight module of the display screen is divided into a direct type backlight module and a side type backlight module. In the direct-type backlight module, the backlight sources are uniformly distributed on the backlight plate at the rear side of the display screen, so that the backlight sources can directly irradiate on the transparent panel of the display screen. In the side-in type backlight module, the backlight source can be erected at the position around the rear side of the transparent panel, and the backlight source can irradiate the light guide plate at the rear side of the transparent panel so as to irradiate the transparent panel through the light guide plate. Compared with the direct type backlight module, the side-in type backlight module needs less backlight light sources, can reduce the thickness of the display screen, and is more applied to the display screen of thin electronic products. The embodiment of the utility model discloses backlight source, it is preferred to set up the backlight source in the side input backlight unit.
In this embodiment, the dual-color chip may be composed of a blue-green chip and a red phosphor, for example, an NTSC1931 chip, and the color gamut value thereof may reach 100-105%. The high-color-gamut bicolor chip is used as a backlight light source, so that the display screen can highly restore the colors which can be sensed by human eyes, the visual impact is improved, and the watching experience of a user can be improved.
As shown in fig. 1, in the plurality of bicolor chips 11 arranged in a row, the specification of each bicolor chip 11 is preferably uniform, that is, the bicolor chips 11 are all blue-green chips, where B represents a blue LED and G represents a green LED, so as to ensure uniform color mixing. The bottom side of the light guide plate 20 is the light incident side of the light guide plate 20, and a row of the bicolor chips 11 can be disposed at the light incident side, so that the light rays of the bicolor chips 11 can be irradiated onto the light guide plate 20 from the light incident side. Each of the dual-color chips 11 is disposed perpendicular to the light incident side of the light guide plate 20, that is, two color LEDs in each of the dual-color chips 11 are disposed perpendicular to the light incident side of the light guide plate 20, one LED is close to the light guide plate 20, and the other LED is far from the light guide plate 20. Accordingly, one row of LEDs may be formed by a plurality of the bicolor chips 11 close to the light guide plate 20, and another row of LEDs may be formed by a plurality of the bicolor chips 11 far from the light guide plate 20, so that two LED rows may be formed.
In this embodiment, when the colors of the LEDs close to the light guide plate side are staggered between the adjacent two-color chips, the colors of the LEDs far from the light guide plate side are also staggered. That is, each LED is different from the adjacent LEDs in the direction perpendicular to the light incident side and in the direction parallel to the light incident side. Such arrangement mode helps the light of different colours to go into the light side direction at the perpendicular to and be on a parallel with and go into the light side direction and can carry out even mixed light, thereby can effectively solve the color cast problem of the corner position of double-colored chip row, has improved backlight source's luminous effect, backlight unit's visual taste, thereby has promoted user's viewing experience.
Fig. 2 is a schematic view of a connection mode of a dual-color chip in a backlight source according to an embodiment of the present invention. Referring to fig. 2(a), optionally, the connection manner of the plurality of bicolor chips 11 includes: according to the conduction direction of the bicolor chips 11, a plurality of bicolor chips 11 are connected by adopting a lead.
Because the LEDs of each color in each bicolor chip include the unidirectional semiconductor, when the colors of the LEDs close to the light guide plate side are staggered between the adjacent bicolor chips, the positive and negative electrodes of the adjacent bicolor chips are also staggered, and the conventional end-to-end connection mode needs to be adjusted to avoid the condition that the LEDs cannot be switched on. Referring to fig. 2(a), the direction of the arrow on the side of each bicolor chip can represent the conduction direction of the bicolor chip, and one wire can be adopted to connect the bicolor chips in series according to the conduction direction so as to ensure that the LEDs are normally conducted.
Referring to fig. 2(b), optionally, the connection manner of the plurality of bicolor chips 11 further includes: the plurality of bicolor chips 11 are divided into two groups according to the colors of the light emitting diodes on the side close to the light guide plate 20; according to the conduction direction of the two-color chips 11, two wires are adopted to respectively connect the two groups of two-color chips 11.
Because the positive and negative electrodes of the adjacent double-color chips are arranged in a staggered manner, the wiring direction needs to be changed alternately in the wiring process, and the situation of wiring errors is easy to occur. In this embodiment, the plurality of bicolor chips may be divided into two groups according to the color of the light emitting diode near the light guide plate, that is, the bicolor chips with the same arrangement of the positive and negative electrodes are used as one group, for example, as shown in fig. 2(b), and the two bicolor chip groups may be represented by i group and j group.
In fig. 2(b), the direction of the arrow on the side of each bicolor chip can represent the conduction direction of the bicolor chip, and two groups of bicolor chips can be connected in series by adopting two wires according to the conduction direction, so that the normal power-on work of the LED can be ensured, and the situation of wiring errors can be avoided to a certain extent due to the consistent wiring direction of the same wire.
In some embodiments, the light incident side of the light guide plate includes at least one side, and when the light incident side of the light guide plate includes an adjacent light incident side, the color of the light emitting diode near the light guide plate side is different between adjacent bicolor chips disposed adjacent to the light incident side.
Any one or more of the four sides of the light guide plate can be used as the light incident side of the light guide plate, each light incident side can be provided with any backlight source provided by the embodiment, and the specification of the bicolor chip in the backlight source arranged on each light incident side is preferably uniform to ensure uniform color mixing.
When the light incident side is the adjacent light incident side, the extension lines of the two rows of the bicolor chips can intersect. For each row of bicolor chips, the bicolor chip closest to the intersection point of the extension line can be used as the bicolor chip adjacent to the bicolor chip in the other row. The LEDs close to the side of the light guide plate between the adjacent two-color chips are arranged to be different colors, so that the light guide plate is helpful for uniform light mixing in the range of the intersection positions of the two lines of two-color chips, and the good light emitting effect of the backlight light source is ensured when the light guide plate comprises the adjacent light incidence sides.
The embodiment of the utility model provides a backlight source, wherein backlight source includes: a plurality of bicolor chips arranged in a row; the two light emitting diodes of each bicolor chip in the bicolor chips are arranged perpendicular to the light incident side of the light guide plate, and the light emitting diodes on the side close to the light guide plate between the adjacent bicolor chips are arranged in a color staggered mode. Therefore, two rows of LED rows with staggered colors can be obtained, light mixing at each position in the light emitting range of the backlight source is uniform, the light emitting effect of the backlight source is improved, and the watching experience of a user is improved.
Example two
The embodiment of the utility model provides a pair of display screen, include: the embodiment of the utility model provides an arbitrary backlight source and light guide plate.
In this embodiment, the display screen is except including the embodiment of the utility model provides an arbitrary backlight source and light guide plate can also include other parts of backlight unit such as backplate, gluey frame and reflector plate.
The display screen that this embodiment provided, through adopting the embodiment of the utility model provides a backlight source can make each position department of backlight source's luminous scope all mix the light evenly, has improved backlight source's luminous effect, has promoted user's viewing experience.
Fig. 3 is a schematic diagram of printing ink dot screen printing and reflector attachment of a display screen according to an embodiment of the present invention. Referring to fig. 3, the light guide plate 20 is optionally silk-screened with complementary color ink dots 21 according to the color cast state of the backlight source 10.
The visible light color can be formed by mixing red, green and blue (R, G, B) three primary colors. In 1931, the CIE international association of illumination was able to draw an RGB color gamut map, i.e. the range of colors that the human eye can perceive, by setting the RGB coefficients.
In this embodiment, the complementary color may be determined according to the RGB color gamut, for example, according to a color mixing coordinate criterion of 0.28 ± 0.015 of color coordinate x and 0.28 ± 0.015 of color coordinate y in the RGB color gamut, and according to the color cast state of the backlight light source. For example, when the end light in the backlight source is mixed and the color is magenta, the complementary color can be determined to be green; when the end light in the backlight source is mixed and the color is shifted to green, the complementary color can be determined to be magenta. By silk-screening complementary color ink dots at the color cast position, light can be adjusted to white light after being mixed, so that the color cast problem is eliminated, and the light emitting effect of the backlight light source is improved.
Referring to fig. 3 again, since the farther from the end of the backlight source, the more slight the color shift, when the complementary color ink dots are silk-screened, the density of the ink dots can also be decreased from the center to the direction away from the center with the most color shift area as the center (for example, with a certain end of the backlight source with the most color shift as the center), so that the density of the ink dots is arranged in a gradual change to improve the color mixing effect.
The silk-screen pattern may be printed with other patterns or shapes besides the ink dots shown in fig. 3, which is not exhaustive.
Referring to fig. 3, optionally, the light guide plate 20 is attached with a complementary color reflective sheet 30 according to a color cast state of the backlight light source 10.
The reflecting sheet to which the complementary color is attached may be a reflecting sheet located on the side surface of the light guide plate in fig. 3, or may be a reflecting sheet located at the bottom of the light guide plate. Wherein, the complementary color can be determined according to the color cast state of the backlight light source according to the RGB color gamut chart. The complementary color reflector is attached to the color cast position, so that light can be adjusted to be white light after being mixed, the color cast problem is eliminated, and the light emitting effect of the backlight source is improved.
Also, since the color shift is more slight as the distance from the end is farther, the complementary color on the reflector sheet in fig. 3 may be gradually changed in color as the center of the most color-shifted region (for example, the end of the backlight source where the color shift is severe) is increased in the direction from the center to the far side, so as to improve the color mixing effect.
The embodiment of the utility model provides a display screen, through adopting the embodiment of the utility model provides an arbitrary backlight source can make each position department all mix the light evenly in backlight source's luminous scope, has improved backlight source's luminous effect. In addition, the color cast state of the backlight light source can be further improved and the light emitting effect of the backlight light source can be improved by silk-screening complementary color ink dots on the light guide plate and/or attaching a complementary color reflecting sheet on the light guide plate.
EXAMPLE III
An embodiment of the utility model provides a pair of electronic product, include: the embodiment of the utility model provides an arbitrary display screen.
The electronic product may be any device provided with a display screen, for example, a television, a mobile phone, a notebook computer, a tablet computer, a desktop computer, or a vehicle-mounted terminal. The electronic product can be configured with any display screen provided by the embodiment of the invention, and the display screen can comprise any backlight source and light guide plate provided by the embodiment of the invention.
The electronic product provided by the embodiment belongs to the same disclosure concept as the backlight source and the display screen provided by the above embodiment, and technical details which are not described in detail in the embodiment of the disclosure can be referred to the above embodiment, and the embodiment has the same beneficial effects as the above embodiment.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (8)
1. A backlight source, comprising: a plurality of bicolor chips arranged in a row;
the two light emitting diodes of each bicolor chip in the bicolor chips are perpendicular to the light incident side of the light guide plate, and the light emitting diodes close to the side of the light guide plate between the adjacent bicolor chips are arranged in a color staggered mode.
2. The backlight source of claim 1, wherein the connection of the plurality of bicolor chips comprises:
and connecting the plurality of bicolor chips by adopting a lead according to the conduction direction of the bicolor chips.
3. The backlight source of claim 1, wherein the connection of the plurality of bicolor chips further comprises:
dividing the plurality of bicolor chips into two groups according to the colors of the light emitting diodes close to the side of the light guide plate;
and according to the conduction direction of the double-color chips, two wires are adopted to respectively connect the two groups of double-color chips.
4. The backlight source of claim 1, wherein the light-incident side of the light guide plate comprises at least one side, and when the light-incident side of the light guide plate comprises adjacent light-incident sides, the color of the light-emitting diodes near the light-incident side is different between adjacent bicolor chips disposed adjacent to the light-incident sides.
5. A display screen, comprising: the backlight source and the light guide plate as set forth in any one of claims 1 to 4.
6. The display screen of claim 5, wherein the light guide plate is silk-screened with complementary color ink dots according to the color cast state of the backlight light source.
7. A display screen according to claim 5, wherein the light guide plate is attached with a complementary color reflecting sheet according to the color cast state of the backlight light source.
8. An electronic product, comprising: a display screen according to any one of claims 5 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021825896.4U CN213182255U (en) | 2020-08-27 | 2020-08-27 | Backlight source, display screen and electronic product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021825896.4U CN213182255U (en) | 2020-08-27 | 2020-08-27 | Backlight source, display screen and electronic product |
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| Publication Number | Publication Date |
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| CN213182255U true CN213182255U (en) | 2021-05-11 |
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| CN202021825896.4U Active CN213182255U (en) | 2020-08-27 | 2020-08-27 | Backlight source, display screen and electronic product |
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| CN (1) | CN213182255U (en) |
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