Liquid crystal display panel and liquid crystal display apparatus with integrated touch screen
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorChengliang Ye
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Abstract
A liquid crystal display panel is provided, which includes an array substrate, a color filter substrate, a display driving chip, a touch driving chip and liquid crystal layer. The array substrate includes a data wire, a pixel electrode and common electrodes. The common electrodes include a touch driving common electrode and a touch sensing common electrode. The touch driving common electrode is connected with a common voltage source via a first switch. The touch sensing common electrode is connected with the common voltage source via a second switch. The technical feature ensures the displaying effect of the display panel.
Claims18
A liquid crystal display panel with an integrated touch screen, comprising an array substrate, a color filter substrate, a display driving chip, a touch driving chip, and a liquid crystal layer disposed between the array substrate and the color filter substrate, wherein the array substrate comprises:
- a data wire for transmitting a data signal;
- a pixel electrode for driving liquid crystal molecules in the crystal layer based on the data signal;
- and
- common electrodes for providing common signals;
- wherein the common electrodes comprise a touch driving common electrode and a touch sensing common electrode which are mutually insulated and used for detecting touch operation, the touch driving common electrode and the touch sensing common electrode are respectively connected with the touch driving chip, the touch driving common electrode is connected with a common voltage source via a first switch, the touch sensing common electrode is connected with the common voltage source via a second switch,
- after the liquid crystal display panel detects a touch signal, the first switch and the second switch are switched to a turned-on state, and after a preset period, the first switch and the second switch are then switched to a turned-off state,
- wherein the preset period is determined based on frame detection time of touch signal detection, and the common source voltage source is a zero voltage source or a ground source.
A liquid crystal display panel with an integrated touch screen, comprising an array substrate, a color filter substrate, a display driving chip, a touch driving chip, and a liquid crystal layer disposed between the array substrate and the color filter substrate, wherein the array substrate comprises:
- a data wire for transmitting a data signal;
- a pixel electrode for driving liquid crystal molecules in the crystal layer based on the data signal, and
- common electrodes for providing common signals;
- wherein the common electrodes comprise a touch driving common electrode and a touch sensing common electrode which are mutually insulated and used for detecting touch operation, the touch driving common electrode and the touch sensing common electrode are respectively connected with the touch driving chip, the touch driving common electrode is connected with a common voltage source via a first switch, the touch sensing common electrode is connected with the common voltage source via a second switch,
- after the liquid crystal display panel detects a touch signal, the first switch and the second switch are switched to a turned-on state, and after a preset period, the first switch and the second switch are then switched to a turned-off state.
A liquid crystal display apparatus with an integrated touch screen, comprising a backlight source and a liquid crystal display panel, the liquid crystal display panel comprising an array substrate, a color filter substrate, a display driving chip, a touch driving chip, and a liquid crystal layer disposed between the array substrate and the color filter substrate, wherein the array substrate comprises:
- a data wire for transmitting a data signal;
- a pixel electrode for driving liquid crystal molecules in the crystal layer based on the data signal, and
- common electrodes for providing common signals;
- wherein the common electrodes comprise a touch driving common electrode and a touch sensing common electrode which are mutually insulated and used for detecting touch operation, the touch driving common electrode and the touch sensing common electrode are respectively connected with the touch driving chip, the touch driving common electrode is connected with a common voltage source via a first switch, the touch sensing common electrode is connected with the common voltage source via a second switch,
- after the liquid crystal display panel detects a touch signal, the first switch and the second switch are switched to a turned-on state, and after a preset period, the first switch and the second switch are then switched to a turned-off state.
Dependencies are inferred from the claim text.