Panasonic Corporation

Panasonic Liquid Crystal Display Co., Ltd.

Panasonic Semiconductor Solutions Co., Ltd.

Satoshi Endou

Jun Suzuki

Hiroyuki Kageyama

Kenji Fukuta

Seiichi Moriyama

Hiroaki Goto

Kenji Yamashita

Akihiro Yoshizawa

Hideki Nozaki

A liquid crystal display includes source lines and gate lines, pixel electrodes, switching elements, a source driver, a gate driver, and a failure inspection circuit. The source lines and the gate lines are disposed in a lattice form. The pixel electrode is disposed in a pixel region defined by the source line and the gate line. The switching element is disposed corresponding to the pixel electrode. The source driver drives the source lines. The gate driver drives the gate lines. The failure inspection circuit is connected to the source lines or the gate lines, and performs inspection of the source lines or the gate lines. The failure inspection circuit includes monitor input signal lines, monitor output signal lines, a determination circuit that detects voltage levels of output signals from the monitor output signal lines, and an expected value comparison circuit that compares outputs from the determination circuit with expected values.

Liquid crystal display device and failure inspection method

A display driving apparatus according to an implementation of the present invention includes: a first delay circuit that generates latch control signals changing with different timings; a second delay circuit that generates falling delay signals and rising delay signals by delaying the latch control signals; a delay selection circuit that (i) selects the falling delay signals or the rising delay signals when pixel data for adjacent display output terminals have changed in different directions and (ii) selects the latch control signals when pixel data for adjacent display output terminals have changed in the same direction; and a step control circuit that drives the display output terminals with timings of the signals selected by the delay signal circuit.

Display driving apparatus, display module package, display panel module, and television set

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Osaka, Japan

Satoshi Endou