Backlight module and display device including the same
AssigneeTcl China Star Optoelectronics Technology Co., Ltd.
InventorsQingsheng Lan, Fuyi Wang
Life of this patent
Estimating the term…
Abstract
A backlight module and a display device are provided. The backlight module includes a backlight and a driving circuit for driving the backlight. In the driving circuit corresponding to at least one backlight unit in the backlight, a data signal input module is configured for inputting a first data signal to a first point during a detection stage, and inputting a compensated second data signal to the first point according to a threshold voltage detected by a detection module during a display stage. The present invention improves uniformity of light emission of the backlight module.
Claims20
A backlight module, comprising:
- a backlight and a driving circuit for driving the backlight, wherein the backlight comprises a plurality of backlight units arranged in an array, each backlight unit is arranged corresponding to a partition of a liquid crystal display panel, and the driving circuit corresponding to at least one of the backlight units comprises:
- a data signal input module configured to input a first data signal to a first point under a control of a first control signal during a detection stage;
- a driving module connected to the data signal input module through the first point and connected to the backlight unit through a second point and configured to drive the backlight unit to emit light under controls of a potential of the first point and a power high-potential signal;
- a detection module connected to the driving module through the second point and configured for detecting a threshold voltage of the driving module during the detection stage under a control of a second control signal;
- and
- a storage module connected to the driving module through the first point and configured to store the threshold voltage of the driving module;
- wherein the data signal input module is further configured to input a compensated second data signal to the first point according to the threshold voltage detected by the detection module during a display stage.
A display device, comprising:
- a liquid crystal display panel and a backlight module, wherein the backlight module comprises a backlight and a driving circuit for driving the backlight, wherein the backlight comprises a plurality of backlight units arranged in an array, each backlight unit is arranged corresponding to a partition of the liquid crystal display panel, and the driving circuit corresponding to at least one of the backlight units comprises:
- a data signal input module configured to input a first data signal to a first point under a control of a first control signal during a detection stage;
- a driving module connected to the data signal input module through the first point and connected to the backlight unit through a second point and configured to drive the backlight unit to emit light under controls of a potential of the first point and a power high-potential signal;
- a detection module connected to the driving module through the second point and configured for detecting a threshold voltage of the driving module during the detection stage under a control of a second control signal;
- and
- a storage module connected to the driving module through the first point and configured to store the threshold voltage of the driving module;
- wherein the data signal input module is further configured to input a compensated second data signal to the first point according to the threshold voltage detected by the detection module during a display stage.
Dependencies are inferred from the claim text.