Display panel and display device having the display panel

Abstract

The invention discloses a display panel and a display device. The display panel comprises a plurality of pixels and a driving unit for driving the plurality of pixels, wherein the various pixels include a plurality of first sub-pixels and one second sub-pixel; the plurality of first sub-pixels include a red sub-pixel, a green sub-pixel and a blue sub-pixel; the second sub-pixel is a white sub-pixel; the first sub-pixels are driven by virtue of the driving unit within a first time period and the second sub-pixel is driven by virtue of the driving unit within a second time period when a picture in pure color is displayed; the first sub-pixels and the second sub-pixel are simultaneously driven by virtue of the driving unit within the first time period when a picture in pure white is displayed, wherein the first time period is a cycle of refreshing frequency of the display panel, and the second time period is one part of the cycle of the refreshing frequency of the display panel. Therefore, the display panel has the advantages of being high in lighting effect, relatively high in pure color rendering property and relatively low in power consumption.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device with the display panel. Background technique [0002] Currently, in an RGB type LCD display with red sub-pixels (R), green sub-pixels (G) and blue sub-pixels (B), the light from the backlight passes through R color resistance, G color resistance, and B color resistance. A large part of light cannot pass through. For example, when the backlight passes through the B color resist, the red light and green light components are filtered out, which leads to the disadvantages of low brightness and high power consumption of LCD displays to a certain extent. Therefore, an RGBW type LCD display with red sub-pixels (R), green sub-pixels (G), blue sub-pixels (B) and white sub-pixels (W) has been developed, and a part of the backlight can almost completely pass through the white sub-pixels (W ), which improves the brightness of the LCD display and...

AI Technical Summary

Problems solved by technology

[0003] However, due to the addition of W sub-pixels in the RGBW four-color system, it may cause problems such as deterioration of the saturation of pure colors in the image. The addition of sub-pixels reduces the size of R, G, and B sub-pixels, and reduces the aperture ratio, resulting in low screen brightness; when using R+W, G+W, and B+W sub-pixels to display R, G, and B solid-color images , due to the addition of W sub-pixels, the color saturation (NTSC) of the display screen is seriously reduced; in the way of W participating in pure color display, due to the addition of W sub-pixels, a block of W sub-pixels is added to the RGB color saturation triangle In order to ensure that the brightest solid-color picture (L255) of R, G, and B has the color saturation that meets the product specifications and display requirements, it is necessary to increase the NTSC that R, G, and B sub-pixels display separately (in practice, there is no such A separate RGB sub-pixel display), for example, if the NTSC required by the display is to be maintained at 70%, it is necessary to increase the thickness of the color resistance of the R, G, and B sub-pixels so that the NTSC displayed by the R, G, and B sub-pixels tends to be 90% (such as figure 1 As shown), however, the increase of the color resistance thickness of the RGB sub-pixel will greatly reduce the transmittance of the R, G, and B sub-pixels. If the transmittance is increased through the W sub-pixel, it will reduce the NTSC

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