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US 8,334,835 B2Granted
Liquid crystal display panel with touch panel function
AssigneeChimei Innolux Corporation
InventorsHung-Ming Shen, Hung-Sheng Cho, Kun-Hsing Hsiao
Life of this patent
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Abstract
A liquid crystal display (LCD) panel provides touch panel function. When the LCD panel is contacted, one or more internal piezoelectric elements respond to the pressure via one or more corresponding photo spacers and generate electrical signals.
Claims13
A liquid crystal display (LCD) panel with touch panel function, the LCD panel, comprising:
- a first substrate;
- a second substrate spaced from the first substrate;
- a plurality of photo spacers extending from one of the first and second substrates toward the other of the first and second substrates;
- and
- a plurality of piezoelectric elements arranged at the other of the first and second substrates, the plurality of piezoelectric elements mechanically coupled to the plurality of photo spacers, respectively, such that each piezoelectric element is sandwiched between the photo spacer and a passivation layer, one of the first and second substrates being bendable such that at least one of the photo spacers presses the corresponding piezoelectric element.
2 more elements
A liquid crystal display (LCD) panel with touch panel function, the LCD panel comprising:
- a first substrate capable of flexing when touched;
- a second substrate separated from the first substrate by a predetermined distance;
- a plurality of photo spacers extending between the first substrate and the second substrate;
- and
- a plurality of piezoelectric elements provided at one of the first substrate and the second substrate and physically coupled to the plurality of photo spacers, respectively, each of the piezoelectric elements sandwiched between the photo spacer and a passivation layer and configured to respond to external pressure applied by the corresponding photo spacer as a result of an external touch of the first substrate and generate a corresponding electrical signal for output.
2 more elements
Dependencies are inferred from the claim text.