48results about How to "Reduce backlight power consumption" patented technology

The invention provides a liquid crystal display panel and a display device. The liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are opposite to each other, the liquid crystal layer is arranged between the first substrate and the second substrate, a first electrode layer is arranged on theside, facing the liquid crystal layer, of the first substrate, a second electrode layer is arranged on the side, facing the liquid crystal layer, of the second substrate, and the first electrode layerand the second electrode layer are in axial symmetry about the liquid crystal layer. According to the liquid crystal display panel and the display device, through the arrangement of the first electrode layer on the first substrate and the arrangement of the second electrode layer on the second substrate, field stress of the liquid crystal layer in the vertical direction can be offset. Therefore,the penetration rate of the liquid crystal display panel can be increased while the backlight power dissipation is lowered, and thus the screen luminance is improved.

The invention discloses a mobile terminal. The mobile terminal comprises a first display screen and a second display screen, wherein the first display screen has a first display surface, the second display screen has a second display surface, the first display screen and the second display screen are opposite in direction, at least one of the first display screen and the second display screen is a reflective liquid crystal display screen, and when one of the display screens is in an image display state, the other is in a closed state. Accordingly, the power consumption of the mobile terminal can be reduced to a certain extent, and the endurance capacity of the mobile terminal can be improved.

The invention relates to a mobile phone backlight control method which comprising the steps of triggering a sensor or a camera on a mobile phone to detect current environment luminance brightness according to an incoming call event or a key action event; adjusting a luminance value of a screen of the mobile phone according to the environment luminance brightness, wherein the higher the environment luminance brightness is, the higher the luminance value of the screen of the mobile phone is; and adjusting a display image of the screen of the mobile phone according to the environment luminance brightness, wherein the high the environment luminance brightness is, the higher an adjusting value is, and the adjusting value comprises a contrast adding value to low brightness pixel and a contrast lowering value to high brightness pixel. According to the mobile phone backlight control method, ambient light induction and image gray scale processing are merged together, ambient light, the displayscreen, backlight of the display screen and backlight of a keyboard are designed into a system, and the dynamic control of the system is conducted by a multipath and efficient adjusting method, so that the power consumption of the backlight is reduced to the largest extent on the premise of not influencing display effect and improving the experience of a user.

The invention discloses a method used for reducing the power consumption of a display panel. The method includes the following steps: measuring a distance between the eyes of a user and a display panel through an infrared sensing unit, and measuring ambient brightness through an ambient light sensing unit; transmitting the measured distance to a processing control unit through the infrared sensingunit, and transmitting the measured ambient brightness to the processing control unit through the ambient light sensing unit; and adjusting the resolution of the display panel through the processingcontrol unit according to the measured distance and the measured ambient brightness.

The invention provides a backlight adjustment method and a backlight adjustment circuit. In the low gray level, a PWM signal generated by a PWM signal generating circuit controls a backlight drive circuit to adjust a first LED lamp string and a second LED lamp string to give out light alternately. Compared with the prior art, the method and the circuit provided by the invention has the advantages that only one LED lamp string gives out light at the same moment, therefore, the power dissipation of a backlight module can be reduced, and the electric quantity can be saved; meanwhile, due to the vision persistence effect of the eyes, when the first LED lamp string and the second LED lamp string give out light alternately, the phenomenon that one part of the backlight area is bright and the other part of the backlight area is dark is avoided, the glowworm effect is avoided, and the display quality is promoted.

The invention discloses a mobile terminal and a power saving reminding method for reminding events of the mobile terminal. The power saving reminding method comprises the steps that the state recognition user scenario where the mobile terminal is located at present is detected when the reminding events exist, the lighting state of a backlight is controlled according to the user scenario, and a user is reminded of the reminding events according to the preset reminding method. Only when the recognition user scenario needs the backlight to be turned on, the backlight is turned on to remind the user. When the recognition user scenario does not need the backlight to be turned on, the backlight is turned on, the user is reminded of the reminding events only through the preset tinkle of bells or vibration, and accordingly the backlight power consumption of the reminding events is saved, and the stand-by time of a battery is prolonged.

A liquid crystal display panel, and a driving device and a method thereof. The method comprises: when a signal type of a received driving signal is not an RGBWY driving signal, decomposing the driving signal (501); outputting the decomposed driving signal according to a pixel array structure of the liquid crystal display panel (502); and when the signal type of the received driving signal is the RGBWY driving signal, directly outputting the driving signal according to the pixel array structure of the liquid crystal display panel (503). The liquid crystal display panel increases backlight utilization by adding white sub-pixels, improves color expression ability by adding yellow sub-pixels, and increases mix-color effects by using a pixel array of a pentile matrix structure.

The present invention relates to a backlight driving circuit, which includes: a voltage supply part configured to supply a first driving voltage; outputting the first driving voltage to the light emitting element, and outputting a second driving voltage lower than the first driving voltage to the light emitting element when the ambient temperature of the light emitting element is higher than the preset threshold.

The invention discloses a backlight module and a display device, comprising: a light-emitting component, a photoluminescent component and a polarization adjustment component; wherein, the light-emitting component is used to provide backlight; the light-emitting component is divided into a plurality of first sub-regions; each The luminous brightness of the first sub-region is different; the photoluminescent component is used to emit a variety of monochromatic lights with polarization directions perpendicular to each other under the excitation of the backlight, and the multiple monochromatic lights are combined into white light and enter the polarization state adjustment component; A state adjusting component is used for adjusting the polarization directions of multiple monochromatic lights in the white light. The above-mentioned backlight module provided by the embodiment of the present invention can not only realize the dynamic control of the backlight spectrum through the joint action of the light-emitting component, the photoluminescence component and the polarization state adjustment component, but also help to improve the color gamut of the product, and can also reduce the power consumption of the backlight. .