CN202125824U - Backlight source and liquid crystal display - Google Patents

Abstract

The utility model discloses a backlight source and a liquid crystal display. The backlight source comprises a light guide plate (LGP) and two rows of LEDs (light-emitting diodes); the two rows of LEDs are respectively arranged at one side of the LGP; each row of LEDs comprise multiple groups of LEDs; the arrangement order of LEDs in each group of LEDs in one row of LEDs is blue, green and red; and the arrangement order of the LEDs in each group of LEDs in the other row of LEDs is red, green and blue. By utilizing the time light mixing technology to realize the backlight source of the liquid crystal display without color filters, the requirement of display of high-quality colorful pictures can be met.

Description

A kind of backlight and LCD

Technical field

The utility model relates to netrual colour optical filter LCD Technology, relates in particular to a kind of backlight and LCD.

Background technology

Traditional LCD adopts spacing color mixed technology to realize colored the demonstration, need use this key component of colored filter.Colored filter is divided into three subpixels with each display unit; This three subpixels is respectively applied for the independent displaying red green blue tricolor; And each sub-pixel only allows the light transmission of a kind of color in the three primary colors, promptly has only 1/3rd luminous energy to access utilization, and its light transmission rate is about 30%.The existence of colored filter has increased the manufacturing process complexity of LCD on the one hand, greatly reduces the whole transmitance of display module in the LCD on the other hand, can increase the energy consumption of backlight accordingly.

Based on the above-mentioned shortcoming of conventional liquid crystal, the someone proposes a kind of new color display technology, and the time mixed light technology that netrual colour optical filter LCD uses that is: is accomplished mixed light through the time difference that Red Green Blue shows.Because three primary colors appear on the same pixel of screen successively according to the regular hour order; As long as alternately speed is enough fast, reach the degree that human eye is difficult to differentiate, so; Utilize visual persistence effect, just can produce the color vision effect the same with the direct mixed light of colored filter.In addition, use the liquid crystal display of netrual colour optical filter also to have following two big advantages:

1, can promote light transmission rate, bring up to more than 70%, can use lower energy consumption to realize the more demonstration of high brightness to major general's light transmission rate;

2, can the aperture opening ratio of LCD be risen to original three times, for the LCD of comparable size, the LCD that utilizes this technology to realize will reach manufacturing place apart from the purpose littler, that resolution ratio is higher.

The utility model content

In view of this, the main purpose of the utility model is to provide a kind of time mixed light technology of utilizing to realize netrual colour optical filter Backlight For Liquid Crystal Display Panels and LCD, can satisfy the display requirement of high-quality colour picture.

For achieving the above object, the technical scheme of the utility model is achieved in that

The utility model provides a kind of backlight, comprising: LGP (LGP) and two row LED; Wherein,

Two row LED lay respectively at the side of LGP, and every row LED comprises many group LED, and the LED of every group of LED puts in order to blue, green, red among the row LED, and the LED of every group of LED puts in order to red, green, blue among another row LED.

In the above-mentioned backlight, red LED, green LED, the blue led of corresponding group during the blue led of every group of LED, green LED, red LED are listed as over against another respectively among the row LED.

The utility model also provides a kind of LCD, comprises backlight; This backlight comprises: LGP and two row LED; Wherein,

Two row LED lay respectively at the side of LGP, and every row LED comprises many group LED, and the LED of every group of LED puts in order to blue, green, red among the row LED, and the LED of every group of LED puts in order to red, green, blue among another row LED.

In the above-mentioned LCD, red LED, green LED, the blue led of corresponding group during the blue led of every group of LED, green LED, red LED are listed as over against another respectively among the row LED.

In the above-mentioned LCD, this LCD also comprises:

Metal framework, glue frame, backboard, optical film material, display screen, reflector plate, flexible PCB and printed circuit board (PCB).

The time mixed light technology of utilizing that the utility model provides realizes netrual colour optical filter Backlight For Liquid Crystal Display Panels and LCD; Two row light emitting diodes in the backlight (LED, Light Emitting Diode) lay respectively at the side of LGP (LGP, Light Guide Plate); Every row LED comprises many group LED; The LED of every group of LED among the one row LED puts in order to blue, green, red, and it is red, green, blue that the LED of every group of LED among another row LED arranges along order, utilizes this backlight; The color vision effect the same can be produced, thereby the display requirement of high-quality colour picture can be satisfied with the direct mixed light of colored filter; In addition, this backlight is combined with the time colour mixture technology that netrual colour optical filter LCD uses, can cut down the consumption of energy and realize the demonstration of high brightness.

Description of drawings

Fig. 1 is the floor map of backlight in the utility model;

Fig. 2 is a representative side section view on the LCD in the utility model;

Fig. 3 is a representative side section view under the LCD in the utility model.

The specific embodiment

The optimal light source of netrual colour optical filter LCD is LED; The luminescent spectrum of LED is all narrower than other light sources (removing laser); Therefore has good monochromaticjty; And the response time of LED be nanosecond, can satisfy the requirement that netrual colour optical filter Backlight For Liquid Crystal Display Panels is lighted at a high speed and extinguished fully.

Through accompanying drawing and specific embodiment the utility model is done further detailed description more below.

Utilize the characteristic of above-mentioned LED, the utility model provides a kind of backlight, and Fig. 1 is the floor map of backlight in the utility model, and is as shown in Figure 1, and this backlight comprises LGP and two row LED; Wherein, two row LED lay respectively at the side of LGP, and every row LED comprises many group LED, and every group of LED comprises the LED of the LED of a redness, a blueness and the LED of a green; Wherein the LED of every group of LED puts in order to blue, green, red among the row LED; The LED of every group of LED puts in order to red, green, blue among another row LED; The blue led, green LED, red LED of every group of LED red LED, green LED, the blue led of corresponding group in another row respectively among the one row LED, the homogeneity of the brightness in entire backlight source when helping improving each monochromatic LED like this and lighting.

Utilize the LCD of above-mentioned backlight, when the LED of color of the same race lighted simultaneously, LED need keep extinguishing rapidly after a period of time, and a period of time of maintenance is slightly less than the response time of LCD, and LCD needs the response time faster.The refreshing frequency of conventional liquid crystal is 60Hz; Time colour mixture technology will resolve into redness, green and three blue sub-frame with a frame picture and show that is: the quantity of real picture is original three times in the identical time, like this; Refreshing frequency just becomes 180Hz; Therefore the demonstration time of each subframe is 1000ms/ (60*3), is about 5.55ms, and the response time of LCD just can meet the demands below 5ms basically.In the practical application, the controlled coremaking sheet of each frame picture resolves into red, green, blue three sub-frame signals, and the deflection of control liquid crystal molecule; When the group frame signal shows; LED to color that should the subframe signal is bright, and when the group frame signal was switched, corresponding LED also switched.

The utility model also proposes a kind of LCD, and this LCD comprises backlight, and this backlight comprises LGP and two row LED; Wherein, two row LED lay respectively at the side of LGP, and every row LED comprises many group LED, and every group of LED comprises the LED of the LED of a redness, a blueness and the LED of a green; Wherein the LED of every group of LED puts in order to blue, green, red among the row LED; The LED of every group of LED puts in order to red, green, blue among another row LED; The blue led, green LED, red LED of every group of LED red LED, green LED, the blue led of corresponding group in another row respectively among the one row LED, the homogeneity of the brightness in entire backlight source when helping improving each monochromatic LED like this and lighting.

Utilize the LCD of above-mentioned backlight, when the LED of color of the same race lighted simultaneously, LED need keep extinguishing rapidly after a period of time, and a period of time of maintenance is slightly less than the response time of LCD, and LCD needs the response time faster.The refreshing frequency of conventional liquid crystal is 60Hz; Time colour mixture technology will resolve into redness, green and three blue sub-frame with a frame picture and show, that is: the quantity of the picture of reality is original three times in the identical time, like this; Refreshing frequency just becomes 180Hz; Therefore the demonstration time of each subframe is 1000ms/ (60*3), is about 5.55ms, and the response time of LCD just can meet the demands below 5ms basically.In the practical application, the controlled coremaking sheet of each frame picture resolves into red, green, blue three sub-frame signals, and the deflection of control liquid crystal molecule; When the group frame signal shows; LED to color that should the subframe signal is bright, and when the group frame signal was switched, corresponding LED also switched.

Fig. 2 and Fig. 3 are respectively the schematic cross-section of LCD upside in the utility model and the schematic cross-section of downside; As shown in Figures 2 and 3, LCD can also comprise: metal framework (Bezel), glue frame (Mold Frame), backboard (Back Cover), optical film material (Film), display screen (Panel), reflector plate (Reflector), flexible PCB (COF) and printed circuit board (PCB) (PCB) etc.

The above; Be merely the preferred embodiment of the utility model; Be not the protection domain that is used to limit the utility model, any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims (5)

1. a backlight is characterized in that, this backlight comprises: LGP (LGP) and two row LED; Wherein,

Two row LED lay respectively at the side of LGP, and every row LED comprises many group LED, and the LED of every group of LED puts in order to blue, green, red among the row LED, and the LED of every group of LED puts in order to red, green, blue among another row LED.

2. backlight according to claim 1 is characterized in that, red LED, green LED, the blue led of corresponding group during the blue led of every group of LED, green LED, red LED are listed as over against another respectively among the row LED.

3. a LCD comprises backlight; It is characterized in that this backlight comprises: LGP and two row LED; Wherein,

Two row LED lay respectively at the side of LGP, and every row LED comprises many group LED, and the LED of every group of LED puts in order to blue, green, red among the row LED, and the LED of every group of LED puts in order to red, green, blue among another row LED.

4. LCD according to claim 3 is characterized in that, red LED, green LED, the blue led of corresponding group during the blue led of every group of LED, green LED, red LED are listed as over against another respectively among the row LED.

5. LCD according to claim 3 is characterized in that, this LCD also comprises:

Metal framework, glue frame, backboard, optical film material, display screen, reflector plate, flexible PCB and printed circuit board (PCB).

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